Karroll "Frog" Tillett poses outside his workshop near his trailer in Wanchese, North Carolina, May 31, 2017. Picture taken May 31, 2017. To match Special Report OCEANS-TIDE/FLOUNDER REUTERS/Shannon Stapleton 

Karroll "Frog" Tillett works on a fishing net at his workshop in Wanchese, North Carolina, June 1, 2017. Picture taken June 1, 2017. To match Special Report OCEANS-TIDE/FLOUNDER REUTERS/Shannon Stapleton 

Karroll "Frog" Tillett speaks outside his workshop near his trailer in Wanchese, North Carolina, May 31, 2017. Picture taken May 31, 2017. To match Special Report OCEANS-TIDE/FLOUNDER REUTERS/Shannon Stapleton 

People play "Frogs" on Commodore 64 at the computer games fair Gamescom in Cologne, Germany, August 22, 2018. REUTERS/Wolfgang Rattay 

Frog pathways to lilly pads are seen in a pond with heavy weeds caused by hot weather in the Connemara village of Letterfrack, Ireland July 24, 2018. REUTERS/Clodagh Kilcoyne 

National Forest and Wildlife Service (SERFOR) and Peruvian police show confiscated live wild frogs used by shamans in Lima, Peru July 19, 2018. REUTERS/Guadalupe Pardo 

National Forest and Wildlife Service (SERFOR) and Peruvian police show a confiscated stuffed frog used by shamans in Lima, Peru July 19, 2018. REUTERS/Guadalupe Pardo 

Supporters, one holding a Pepe the Frog toy, cheer for U.S. President Donald Trump as he speaks during a rally at North Side middle school in Elkhart, Indiana, U.S., May 10, 2018. REUTERS/Leah Millis 

Frogs are seen in a net at a market in Bangkok, Thailand May 6, 2018. REUTERS/Soe Zeya Tun 

A man sells frogs in a market in Bangkok, Thailand May 6, 2018. REUTERS/Soe Zeya Tun 

Buddy, an entertainment and assistant robot by Blue Frog Robotics, interacts with a attendee during CES Unveiled at the 2018 CES in Las Vegas, Nevada, U.S. January 7, 2018. REUTERS/Steve Marcus 

A Buddy robot by Blue Frog roams the floor during the opening event at CES in Las Vegas, Nevada, U.S. January 7, 2018. REUTERS/Rick Wilking 

An Australian Green Tree frog named "Godzilla" sits on the hand of Kathy Potter of the Frog and Toad Study Group during the launch of the Australian Museum's national frog count phone app called "FrogID" in Sydney, Australia, November 10, 2017. REUTERS/David Gray TPX IMAGES OF THE DAY 

An Australian Green Tree frog named "Godzilla" sits on the hand of Kathy Potter of the Frog and Toad Study Group during the launch of the Australian Museum's national frog count phone app called "FrogID" in Sydney, Australia, November 10, 2017. REUTERS/David Gray 

An Australian Green Tree frog named "Godzilla" sits on the hand of Kathy Potter of the Frog and Toad Study Group during the launch of the Australian Museum's national frog count phone app called "FrogID" in Sydney, Australia, November 10, 2017. REUTERS/David Gray 

An Australian Green Tree frog named "Godzilla" sits on the hand of Kathy Potter of the Frog and Toad Study Group during the launch of the Australian Museum's national frog count phone app called "FrogID" in Sydney, Australia, November 10, 2017. REUTERS/David Gray 

Sierra Rees, of Seattle, wears a Pepe the frog shirt hand-painted by her friend Jaeda Ferrel at a rally organized by the right-wing group Patriot Prayer in Vancouver, Washington, U.S. September 10, 2017. REUTERS/Elijah Nouvelage 

Jaeda Ferrel, of Seattle, wears a helmet adorned with an image of Pepe the frog that she hand-painted and a Trump/Pence sticker at a rally organized by the right-wing group Patriot Prayer in Vancouver, Washington, U.S. September 10, 2017. REUTERS/Elijah Nouvelage 

A man wearing American flags holds up a Pepe the frog flag at a rally organized by the right-wing group Patriot Prayer in Vancouver, Washington, U.S. September 10, 2017. REUTERS/Elijah Nouvelage 

Counter protesters are seen behind a police line between Texas and Pepe the frog flags at a rally organized by the right-wing group Patriot Prayer in Vancouver, Washington, U.S. September 10, 2017. REUTERS/Elijah Nouvelage 

A fleas flying tree frog sits on scales during a photocall for the annual weigh-in at London Zoo in London, Britain August 24, 2017. REUTERS/Neil Hall 

A fleas flying tree frog sits on a photographers lens during a photocall for the annual weigh-in at London Zoo in London, Britain August 24, 2017. REUTERS/Neil Hall TPX IMAGES OF THE DAY 

A fleas flying tree frog sits on scales during a photocall for the annual weigh-in at London Zoo in London, Britain August 24, 2017. REUTERS/Neil Hall 

A fleas flying tree frog sits on scales during a photocall for the annual weigh-in at London Zoo in London, Britain August 24, 2017. REUTERS/Neil Hall 

An Orange-Eyed Tree Frog is pictured in an enclosure during a summer day at Los Angeles Zoo in Los Angeles, California, U.S., August 5, 2017. REUTERS/Mario Anzuoni 

British Foreign Secretary Boris Johnson laughs as he speaks with Iain Griffin, CEO of SeatFrog, during a visit to the Tyro Fintech technology hub in Sydney, Australia, July 26, 2017. REUTERS/William West/Pool 

A 'BUDDY' robot, manufactured by Blue Frog Robotics, is displayed at the Viva Technology conference in Paris, France, June 15, 2017. REUTERS/Benoit Tessier 

A tadpole swims over an underwater leaf in the Bressonne Pond at the Chalet-a-Gobet, in Lausanne, Switzerland May 5, 2017. REUTERS/Denis Balibouse 

A portion of the Boston skyline is reflected in the Frog Pond on Boston Common in Boston, Massachusetts, U.S., April 20, 2017. REUTERS/Brian Snyder 

Visitors look at SoftBank humanoid robots named Pepper (L) and Nao (C), and Blue Frog Robotics robot named Buddy (R) at the SIdO, the Connected Business trade show, in Lyon, France, April 6, 2017. REUTERS/Robert Pratta 

A man, who refused to give his name, holds a raw bacon sandwich as he stands in a pen wearing a Pepe the Frog sweat shirt during an "I am Muslim Too" rally in Times Square, Manhattan, New York, U.S. February 19, 2017. REUTERS/Carlo Allegri 

A man, who refused to give his name, takes a bite of a raw bacon sandwich as he stands in a pen wearing a Pepe the Frog sweat shirt during an "I am Muslim Too" rally in Times Square, Manhattan, New York, U.S. February 19, 2017. REUTERS/Carlo Allegri 

A man hides his face behind a Pepe the Frog sign after Republican presidential nominee Donald Trump spoke at an airport campaign rally in Albuquerque, New Mexico, U.S. October 30, 2016. REUTERS/Carlo Allegri 

Martin Shkreli, former chief executive officer of Turing Pharmaceuticals and KaloBios Pharmaceuticals Inc, wears a Pepe the Frog lapel pin as he arrives for a hearing at U.S. Federal Court in Brooklyn, New York, U.S. October 14, 2016. REUTERS/Lucas Jackson 

A performer is seen wearing a frog mask during a visit by Britain's Prince William and Catherine, Duchess of Cambridge, at the Haida Heritage Centre and Museum at Kaay Llnagaay during their eight day royal tour to Canada in Haida Gwaii, British Columbia, Canada, September 30, 2016. REUTERS/Kevin Light? 

A giant lantern in the shape of an endangered corroboree frog sits against the backdrop of the Sydney Harbour Bridge during a preview of Taronga Zoo's inaugural contribution to the Vivid Sydney light festival, the annual interactive light installation and projection event around Sydney, Australia, May 24, 2016. REUTERS/Jason Reed

Actress Zooey Deschanel and Kermit the Frog talk on stage during WE Day California in Inglewood, California, April 7, 2016. REUTERS/Danny Moloshok TPX IMAGES OF THE DAY

Actress Zooey Deschanel and Kermit the Frog talk on stage during WE Day California in Inglewood, California, April 7, 2016. REUTERS/Danny Moloshok 

Actress Zooey Deschanel and Kermit the Frog talk on stage during WE Day California in Inglewood, California, April 7, 2016. REUTERS/Danny Moloshok 

Actor Rico Rodriguez and Raini Rodriguez pose for a selfie photo with Kermit the Frog during We Day California in Inglewood, California, April 7, 2016. REUTERS/Danny Moloshok 

Rubber ducks and a frog are photographed in a private bathroom in Offenbach, Germany, March 20, 2016. REUTERS/Kai Pfaffenbach

A Dendrobates leucomelas frog is pictured at a terrarium in Caracas November 30, 2015. Venezuelan frogs and toads are in critical danger due to climate change as rising temperatures complicate reproduction and spread a deadly fungus, say scientists, who liken the species to canaries in a coalmine warning of imminent danger. The survival of a group of nearly 20 frog and toad species, which top Venezuela's list of endangered species, may rest on a small group of academics in a Caracas laboratory attempting to recreate the amphibians' natural reproductive conditions. Picture taken on November 30, 2015. REUTERS/Carlos Garcia Rawlins 

Luis Merlo, a veterinarian, works in the Dendrobates leucomelas frogs habitat, at the terrarium facilities in Caracas November 30, 2015. Venezuelan frogs and toads are in critical danger due to climate change as rising temperatures complicate reproduction and spread a deadly fungus, say scientists, who liken the species to canaries in a coalmine warning of imminent danger. The survival of a group of nearly 20 frog and toad species, which top Venezuela's list of endangered species, may rest on a small group of academics in a Caracas laboratory attempting to recreate the amphibians' natural reproductive conditions. Picture taken on November 30, 2015. REUTERS/Carlos Garcia Rawlins 

Luis Merlo, a veterinarian, works in the frogs habitats at the terrarium facilities in Caracas November 30, 2015. Venezuelan frogs and toads are in critical danger due to climate change as rising temperatures complicate reproduction and spread a deadly fungus, say scientists, who liken the species to canaries in a coalmine warning of imminent danger. The survival of a group of nearly 20 frog and toad species, which top Venezuela's list of endangered species, may rest on a small group of academics in a Caracas laboratory attempting to recreate the amphibians' natural reproductive conditions. Picture taken on November 30, 2015. REUTERS/Carlos Garcia Rawlins 

Luis Merlo, a veterinarian, works in the frogs habitats at the terrarium facilities in Caracas November 30, 2015. Venezuelan frogs and toads are in critical danger due to climate change as rising temperatures complicate reproduction and spread a deadly fungus, say scientists, who liken the species to canaries in a coalmine warning of imminent danger. The survival of a group of nearly 20 frog and toad species, which top Venezuela's list of endangered species, may rest on a small group of academics in a Caracas laboratory attempting to recreate the amphibians' natural reproductive conditions. Picture taken on November 30, 2015. REUTERS/Carlos Garcia Rawlins 

Luis Merlo, a veterinarian, fills glass containers with food for Drosophila melanogaster larvae, that will be used as part of the diet for frogs, at the terrarium facilities in Caracas November 30, 2015. Venezuelan frogs and toads are in critical danger due to climate change as rising temperatures complicate reproduction and spread a deadly fungus, say scientists, who liken the species to canaries in a coalmine warning of imminent danger. The survival of a group of nearly 20 frog and toad species, which top Venezuela's list of endangered species, may rest on a small group of academics in a Caracas laboratory attempting to recreate the amphibians' natural reproductive conditions. Picture taken on November 30, 2015. REUTERS/Carlos Garcia Rawlins 

A Rhinella marina toad is pictured at a terrarium in Caracas November 30, 2015. Venezuelan frogs and toads are in critical danger due to climate change as rising temperatures complicate reproduction and spread a deadly fungus, say scientists, who liken the species to canaries in a coalmine warning of imminent danger. The survival of a group of nearly 20 frog and toad species, which top Venezuela's list of endangered species, may rest on a small group of academics in a Caracas laboratory attempting to recreate the amphibians' natural reproductive conditions. Picture taken on November 30, 2015. REUTERS/Carlos Garcia Rawlins 

Drosophila melanogaster larvae, that will be used as part of the diet for frogs, are seen inside glass containers at the terrarium facilities in Caracas November 30, 2015. Venezuelan frogs and toads are in critical danger due to climate change as rising temperatures complicate reproduction and spread a deadly fungus, say scientists, who liken the species to canaries in a coalmine warning of imminent danger. The survival of a group of nearly 20 frog and toad species, which top Venezuela's list of endangered species, may rest on a small group of academics in a Caracas laboratory attempting to recreate the amphibians' natural reproductive conditions. Picture taken on November 30, 2015. REUTERS/Carlos Garcia Rawlins 

A Mannophryne herminae frog is pictured at a terrarium in Caracas November 30, 2015. Venezuelan frogs and toads are in critical danger due to climate change as rising temperatures complicate reproduction and spread a deadly fungus, say scientists, who liken the species to canaries in a coalmine warning of imminent danger. The survival of a group of nearly 20 frog and toad species, which top Venezuela's list of endangered species, may rest on a small group of academics in a Caracas laboratory attempting to recreate the amphibians' natural reproductive conditions. Picture taken on November 30, 2015. REUTERS/Carlos Garcia Rawlins 

A Leptodactylus fuscus frog is pictured at a terrarium in Caracas November 30, 2015. Venezuelan frogs and toads are in critical danger due to climate change as rising temperatures complicate reproduction and spread a deadly fungus, say scientists, who liken the species to canaries in a coalmine warning of imminent danger. The survival of a group of nearly 20 frog and toad species, which top Venezuela's list of endangered species, may rest on a small group of academics in a Caracas laboratory attempting to recreate the amphibians' natural reproductive conditions. Picture taken on November 30, 2015. REUTERS/Carlos Garcia Rawlins 

A Ceratophrys calcarata frog is pictured at a terrarium in Caracas November 30, 2015. Venezuelan frogs and toads are in critical danger due to climate change as rising temperatures complicate reproduction and spread a deadly fungus, say scientists, who liken the species to canaries in a coalmine warning of imminent danger. The survival of a group of nearly 20 frog and toad species, which top Venezuela's list of endangered species, may rest on a small group of academics in a Caracas laboratory attempting to recreate the amphibians' natural reproductive conditions. Picture taken on November 30, 2015. REUTERS/Carlos Garcia Rawlins 

A Trachycephalus venulosus frog is pictured at a terrarium in Caracas November 30, 2015. Venezuelan frogs and toads are in critical danger due to climate change as rising temperatures complicate reproduction and spread a deadly fungus, say scientists, who liken the species to canaries in a coalmine warning of imminent danger. The survival of a group of nearly 20 frog and toad species, which top Venezuela's list of endangered species, may rest on a small group of academics in a Caracas laboratory attempting to recreate the amphibians' natural reproductive conditions. Picture taken on November 30, 2015. REUTERS/Carlos Garcia Rawlins 

A Hypsiboas crepitans frog is pictured at a terrarium in Caracas November 30, 2015. Venezuelan frogs and toads are in critical danger due to climate change as rising temperatures complicate reproduction and spread a deadly fungus, say scientists, who liken the species to canaries in a coalmine warning of imminent danger. The survival of a group of nearly 20 frog and toad species, which top Venezuela's list of endangered species, may rest on a small group of academics in a Caracas laboratory attempting to recreate the amphibians' natural reproductive conditions. Picture taken on November 30, 2015. REUTERS/Carlos Garcia Rawlins TPX IMAGES OF THE DAY

An Ameerega trivittatus frog is pictured at a terrarium in Caracas November 30, 2015. Venezuelan frogs and toads are in critical danger due to climate change as rising temperatures complicate reproduction and spread a deadly fungus, say scientists, who liken the species to canaries in a coalmine warning of imminent danger. The survival of a group of nearly 20 frog and toad species, which top Venezuela's list of endangered species, may rest on a small group of academics in a Caracas laboratory attempting to recreate the amphibians' natural reproductive conditions. Picture taken on November 30, 2015. REUTERS/Carlos Garcia Rawlins 

A statue of a frog is seen behind a lifeguard chair on a beach in Cancun, August 14, 2015. Cancun’s transformation in the 1970s from a small Caribbean fishing village into a strip of nightclubs and high-rise hotels has reduced biodiversity and polluted water resources as infrastructure struggles to keep up. REUTERS/Edgard Garrido PICTURE 27 OF 34 FOR WIDER IMAGE STORY 'EARTHPRINTS: CANCUN'SEARCH 'EARTHPRINTS CANCUN' FOR ALL IMAGES 

A girl in the Frog Pond tries to sneak up on a bird on a warm summer afternoon in Boston, Massachusetts September 1, 2015. REUTERS/Brian Snyder 

Writers and executive producers Bill Prady (L) and Bob Kushell and Muppet characters Kermit the Frog and Miss Piggy attend a panel for the Disney-ABC television series "The Muppets" during the Television Critics Association Cable Summer Press Tour in Beverly Hills, California August 4, 2015. REUTERS/Mario Anzuoni TPX IMAGES OF THE DAY

Muppets character Kermit the Frog speaks at a panel for the Disney-ABC television series "The Muppets" during the Television Critics Association Cable Summer Press Tour in Beverly Hills, California August 4, 2015. REUTERS/Mario Anzuoni 

Writer and executive producer Bill Prady and Muppets character Kermit the Frog attend a panel for the Disney-ABC television series "The Muppets" during the Television Critics Association Cable Summer Press Tour in Beverly Hills, California August 4, 2015. REUTERS/Mario Anzuoni