A dog wearing a Christmas costume participates in a canine fashion competition, in Lima, Peru December 16, 2021. REUTERS/Angela Ponce 

Dogs wearing Christmas costumes attend a canine fashion competition, in Lima, Peru December 16, 2021. REUTERS/Angela Ponce 

A dog wearing a Christmas costume attends a canine fashion competition, in Lima, Peru December 16, 2021. REUTERS/Angela Ponce 

People dressed in Christmas costumes pose with their dog at a canine fashion competition, in Lima, Peru December 16, 2021. REUTERS/Angela Ponce 

A man donning a Santa Claus beard sits with a dog wearing a Christmas costume at a canine fashion competition, in Lima, Peru December 16, 2021. REUTERS/Angela Ponce 

Kristin Gist and her dog Ollie greet patient Ricardo Martin, 6, with the return of the canine program at Rady Children's Hospital as the hospital eases some of their COVID-19 restrictions in San Diego, California, U.S., November, 11, 2021. Picture taken November 11, 2021. REUTERS/Mike Blake 

Ollie greets Tanner Rico, 16, as dogs return to the canine program at Rady Children's Hospital with the easing of some of their COVID-19 restrictions in San Diego, California, U.S., November, 11, 2021. Picture taken November 11, 2021. REUTERS/Mike Blake 

Ollie the dog waits at home for a ride to the hospital as he returns to the canine program at Rady Children's Hospital in San Diego, California, U.S., November, 11, 2021. Picture taken November 11, 2021. REUTERS/Mike Blake 

Kristin Gist and her dog Ollie greet a healthcare worker as dogs return to the canine program at Rady Children's Hospital with the easing of some of their COVID-19 restrictions in San Diego, California, U.S., November, 11, 2021. Picture taken November 11, 2021. REUTERS/Mike Blake 

Owner Kristin Gist carries the hospital ID card of her dog Ollie as they return to the canine program at Rady Children's Hospital in San Diego, California, U.S., November, 11, 2021. Picture taken November 11, 2021. REUTERS/Mike Blake 

Kristin Gist and her dog Ollie meet 9-year-old Angel Garcia with the return of the canine program at Rady Children's Hospital as the hospital eases some of their COVID-19 restrictions in San Diego, California, U.S., November, 11, 2021. Picture taken November 11, 2021. REUTERS/Mike Blake 

Nepalese police officers worship a dog during "Kukur Tihar as part of Tihar celebrations at police canine training centre in Kathmandu, Nepal, November 3, 2021. REUTERS/Navesh Chitrakar 

A dog is offered a garland while being worshipped by the Nepalese police officers during Kukur Tihar as part of Tihar celebrations at police canine training centre in Kathmandu, Nepal, November 3, 2021. REUTERS/Navesh Chitrakar 

A dog sits with his handler after being worshipped during Kukur Tihar as part of Tihar celebrations at police canine training centre in Kathmandu, Nepal, November 3, 2021. REUTERS/Navesh Chitrakar 

A dog smeared with vermilion powder sits with his handler after being worshipped during Kukur Tihar as part of Tihar celebrations, at police canine training centre in Kathmandu, Nepal, November 3, 2021. REUTERS/Navesh Chitrakar 

Nepalese police officers march with their dogs before worshipping them during Kukur Tihar as part of Tihar celebrations at police canine training centre in Kathmandu, Nepal, November 3, 2021. REUTERS/Navesh Chitrakar 

A Nepalese police officer pets his dog as they take part during Kukur Tihar as part of Tihar celebrations at police canine training centre in Kathmandu, Nepal, November 3, 2021. REUTERS/Navesh Chitrakar 

A dog performs tricks during Kukur Tihar as part of Tihar celebrations, at police canine training centre in Kathmandu, Nepal, November 3, 2021. REUTERS/Navesh Chitrakar TPX IMAGES OF THE DAY 

A dog performs tricks during Kukur Tihar as part of Tihar celebrations, at police canine training centre in Kathmandu, Nepal, November 3, 2021. REUTERS/Navesh Chitrakar 

A dog performs tricks during Kukur Tihar as part of Tihar celebrations, at police canine training centre in Kathmandu, Nepal, November 3, 2021. REUTERS/Navesh Chitrakar 

The 74th Cannes Film Festival – Cannes, France, July 8, 2021. A French municipal police officer presents a dog that has been trained to sniff out the coronavirus disease (COVID-19) during the film festival. REUTERS/Gonzalo Fuentes 

The 74th Cannes Film Festival – Cannes, France, July 8, 2021. French municipal police present dogs that have been trained to sniff out the coronavirus disease (COVID-19) during the film festival. REUTERS/Gonzalo Fuentes 

The 74th Cannes Film Festival – Cannes, France, July 8, 2021. A French municipal police officer presents a dog that has been trained to sniff out the coronavirus disease (COVID-19) during the film festival. REUTERS/Gonzalo Fuentes 

A health worker collects a sample screened by a dog that has been trained to sniff out the coronavirus disease (COVID-19), at Chulalongkorn University, in Bangkok, Thailand May 21, 2021. REUTERS/Jorge Silva 

A health worker collects samples screened by dogs that have been trained to sniff out the coronavirus disease (COVID-19), at Chulalongkorn University, in Bangkok, Thailand May 21, 2021. REUTERS/Jorge Silva 

A health worker collects samples screened by dogs that have been trained to sniff out the coronavirus disease (COVID-19), at Chulalongkorn University, in Bangkok, Thailand May 21, 2021. REUTERS/Jorge Silva 

A dog that has been trained to sniff out the coronavirus disease (COVID-19), screens sweat samples at Chulalongkorn University, in Bangkok, Thailand May 21, 2021. REUTERS/Jorge Silva 

A dog that has been trained to sniff out the coronavirus disease (COVID-19), screens sweat samples at Chulalongkorn University, in Bangkok, Thailand May 21, 2021. REUTERS/Jorge Silva 

A dog that has been trained to sniff out the coronavirus disease (COVID-19), screens a sweat sample at Chulalongkorn University, in Bangkok, Thailand May 21, 2021. REUTERS/Jorge Silva 

A dog that has been trained to sniff out the coronavirus disease (COVID-19), screens a sweat sample at Chulalongkorn University, in Bangkok, Thailand May 21, 2021. REUTERS/Jorge Silva 

A dog that has been trained to sniff out the coronavirus disease (COVID-19), screens a sweat sample at Chulalongkorn University, in Bangkok, Thailand May 21, 2021. REUTERS/Jorge Silva 

A dog that has been trained to sniff out the coronavirus disease (COVID-19), screens a sweat sample at Chulalongkorn University, in Bangkok, Thailand May 21, 2021. REUTERS/Jorge Silva TPX IMAGES OF THE DAY 

A dog that has been trained to sniff out the coronavirus disease (COVID-19), screens a sweat sample at Chulalongkorn University, in Bangkok, Thailand May 21, 2021. REUTERS/Jorge Silva 

A dog that has been trained to sniff out the coronavirus disease (COVID-19), sits after identifying a positive case, at Chulalongkorn University, in Bangkok, Thailand May 21, 2021. REUTERS/Jorge Silva 

A dog that has been trained to sniff out the coronavirus disease (COVID-19), screens a sweat sample at Chulalongkorn University, in Bangkok, Thailand May 21, 2021. REUTERS/Jorge Silva 

Dogs that have been trained to sniff out the coronavirus disease (COVID-19), are seen at Chulalongkorn University, in Bangkok, Thailand May 21, 2021. REUTERS/Jorge Silva 

A health worker collects samples screened by dogs that have been trained to sniff out the coronavirus disease (COVID-19), at Chulalongkorn University, in Bangkok, Thailand May 21, 2021. REUTERS/Jorge Silva 

A dog that has been trained to sniff out the coronavirus disease (COVID-19), screens sweat samples from health workers, at Chulalongkorn University, in Bangkok, Thailand May 21, 2021. REUTERS/Jorge Silva 

U.S. First Lady Jill Biden pets Chewy, ATF's National Canine Division member (Bureau of Alcohol, Tobacco, Firearms and Explosives), as she makes her way to board a plane before departing from Albuquerque International Sunport in Albuquerque, New Mexico, U.S. April 23, 2021. Mandel Ngan/Pool via REUTERS 

U.S. First Lady Jill Biden pets Chewy, ATF's National Canine Division member (Bureau of Alcohol, Tobacco, Firearms and Explosives), as she makes her way to board a plane before departing from Albuquerque International Sunport in Albuquerque, New Mexico, U.S. April 23, 2021. Mandel Ngan/Pool via REUTERS 

U.S. First Lady Jill Biden pets Chewy, ATF's National Canine Division member (Bureau of Alcohol, Tobacco, Firearms and Explosives), as she makes her way to board a plane before departing from Albuquerque International Sunport in Albuquerque, New Mexico, U.S. April 23, 2021. Mandel Ngan/Pool via REUTERS 

An officer from the Hennepin County Sheriff's office and his canine partner stand outside the Hennepin County Government Center on the fourth day in the trial of former police officer Derek Chauvin, who is facing murder charges in the death of George Floyd, in Minneapolis, Minnesota, U.S., April 1, 2021. REUTERS/Nicholas Pfosi 

A disabled dog is seen next to canine mobility aids before a daily walk at The Man That Rescues Dogs Foundation in Chonburi, Thailand, January 28, 2021. Picture taken January 28, 2021. REUTERS/Athit Perawongmetha 

A trainer from the canine service of Aeroflot airline trains sniffer dogs to detect the coronavirus in biomaterial from infected people near Sheremetyevo International Airport, outside Moscow, Russia October 9, 2020. REUTERS/Tatyana Makeyeva 

A trainer from the canine service of Aeroflot airline trains a sniffer dog to detect the coronavirus in biomaterial from infected people at a range near Sheremetyevo International Airport, outside Moscow, Russia October 9, 2020. REUTERS/Tatyana Makeyeva 

A trainer from the canine service of Aeroflot airline trains sniffer dogs to detect the coronavirus in biomaterial from infected people near Sheremetyevo International Airport, outside Moscow, Russia October 9, 2020. REUTERS/Tatyana Makeyeva 

A sniffer dog is trained to detect the coronavirus in biomaterial from infected people at a range of the canine service of Aeroflot airline near Sheremetyevo International Airport, outside Moscow, Russia October 9, 2020. REUTERS/Tatyana Makeyeva 

A trainer from the canine service of Aeroflot airline trains a sniffer dog to detect the coronavirus in biomaterial from infected people near Sheremetyevo International Airport, outside Moscow, Russia October 9, 2020. REUTERS/Tatyana Makeyeva 

A trainer from the canine service of Aeroflot airline trains a sniffer dog to detect the coronavirus in biomaterial from infected people near Sheremetyevo International Airport, outside Moscow, Russia October 9, 2020. REUTERS/Tatyana Makeyeva 

A trainer from the canine service of Aeroflot airline trains a sniffer dog to detect the coronavirus in biomaterial from infected people near Sheremetyevo International Airport, outside Moscow, Russia October 9, 2020. REUTERS/Tatyana Makeyeva 

A trainer from the canine service of Aeroflot airline trains a sniffer dog to detect the coronavirus in biomaterial from infected people near Sheremetyevo International Airport, outside Moscow, Russia October 9, 2020. REUTERS/Tatyana Makeyeva 

A trainer from the canine service of Aeroflot airline trains sniffer dogs to detect the coronavirus in biomaterial from infected people near Sheremetyevo International Airport, outside Moscow, Russia October 9, 2020. REUTERS/Tatyana Makeyeva TPX IMAGES OF THE DAY 

A search and rescue team from Salt Lake City, Utah, including a canine, look for victims through gutted homes in the aftermath of the Almeda fire in Talent, Oregon, U.S., September 13, 2020. Picture taken with a drone. REUTERS/Adrees Latif 

A search and rescue team, including a canine, from Salt Lake City, Utah, look for victims through gutted homes in the aftermath of the Almeda fire in Talent, Oregon, U.S., September 13, 2020. Picture taken with a drone. REUTERS/Adrees Latif 

A member of a search and rescue team from Salt Lake City, including a canine named Kya, look for victims through gutted homes in the aftermath of the Almeda fire in Talent, Oregon, U.S., September 13, 2020. REUTERS/Adrees Latif 

A member of a search and rescue team from Salt Lake City, including a canine named Kya, look for victims through gutted homes in the aftermath of the Almeda fire in Talent, Oregon, U.S., September 13, 2020. REUTERS/Adrees Latif 

A member of a search and rescue team from Salt Lake City, including a canine named Kya, look for victims through gutted homes in the aftermath of the Almeda fire in Talent, Oregon, U.S., September 13, 2020. REUTERS/Adrees Latif TPX IMAGES OF THE DAY 

A search and rescue team, including a canine, from Salt Lake City, Utah, look for victims through gutted homes in the aftermath of the Almeda fire in Talent, Oregon, U.S., September 13, 2020. Picture taken with a drone. REUTERS/Adrees Latif TPX IMAGES OF THE DAY 

A search and rescue team, including a canine, from Salt Lake City, Utah, look for victims through gutted homes in the aftermath of the Almeda fire in Talent, Oregon, U.S., September 13, 2020. Picture taken with a drone. REUTERS/Adrees Latif