A rebel fighter of Jaysh al-Islam (Army of Islam) holds up a kitten he said he rescued near Deir Salman frontline, near the highway of Damascus international airport, after what the rebels said were advances made in the area following clashes with forces loyal to Syria's President Bashar al-Assad May 11, 2015. REUTERS/Amer Almohibany

Medics save kittens after what activists said was a barrel bomb dropped by forces loyal to Syria's President Bashar al-Assad at the Red Crescent medical center in al-Sakhour neighborhood of Aleppo April 28, 2015. REUTERS/Hamid Khatib TPX IMAGES OF THE DAY

Alaa, an ambulance driver, feeds cats in Masaken Hanano in Aleppo, September 24, 2014. Alaa buys about $4 of meat everyday to feed about 150 abandoned cats in Masaken Hanano, a neigbourhood in Aleppo that has been abandoned because of shelling from forces loyal to Syria's president Bashar Al-Assad on it. Alaa said that he has been feeding and taking care of the cats for over 2 months. REUTERS/Hosam Katan (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT ANIMALS TPX IMAGES OF THE DAY) 

An Israeli soldier looks at a cat lying next to his weapon near the border with the Gaza Strip August 10, 2014. Israel has accepted a new Gaza ceasefire proposed by Egyptian mediators and will send negotiators to Cairo on Monday if the truce holds, Israeli officials said. REUTERS/Amir Cohen (ISRAEL - Tags: POLITICS CIVIL UNREST CONFLICT MILITARY ANIMALS) 

A civilian helps a goat stuck in rubble at a site hit by what activists said were airstrikes by forces loyal to Syria's President Bashar al-Assad in Ain Larouz village in the Jabal al-Zawiya region of Idlib province April 24, 2015. REUTERS/Abed Kontar 

A man holds a dog in front of a damaged building by recent shelling in the western part of Donetsk, eastern Ukraine, November 27, 2014. REUTERS/Antonio Bronic (UKRAINE - Tags: CONFLICT CIVIL UNREST ANIMALS) 

A Free Syrian Army fighter feeds a cat in the old city of Aleppo January 6, 2013. REUTERS/Muzaffar Salman (SYRIA - Tags: CONFLICT ANIMALS TPX IMAGES OF THE DAY) 

A pro-Russian rebel guarding a school plays with his dog, which he nicknamed Rex-separatist in reference to the pro-Russian separatist movement, in Donetsk, eastern Ukraine, October 16, 2014. The dog is wearing an orange ribbon of St. George, a symbol widely associated with pro-Russian protests in Ukraine. REUTERS/Shamil Zhumatov (UKRAINE - Tags: POLITICS CIVIL UNREST ANIMALS) 

A member of the Kurdish People's Protection Units (YPG) feeds a goat near the city of Ras al-Ain November 5, 2013. Redur Xelil, spokesman for the armed wing of the Syrian Kurdish Democratic Union Party (PYD), said Kurdish militias had seized the city of Ras al-Ain and all its surrounding villages. Syrian Kurdish fighters have captured more territory from Islamist rebels in northeastern Syria, a Kurdish militant group said on Monday, tightening their grip on an area where they have been setting up autonomous rule. REUTERS/Stringer (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT) 

A Free Syrian Army fighter pets a cat as a fellow fighter watches in Deir al-Zor, eastern Syria November 27, 2013. Picture taken November 27. REUTERS/Khalil Ashawi (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT ANIMALS MILITARY) 

A Kurdish female fighter of the Women Protection Unit (YPJ) pets a dog at a training field near Qamishli city May 11, 2014. Picture taken May 11, 2014. REUTERS/Massoud Mohammed (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT MILITARY ANIMALS) 

A Free Syrian Army fighter holds a cat as he looks at his computer in Deir al-Zor, eastern Syria December 6, 2013. Picture taken December 6, 2013. REUTERS/Khalil Ashawi (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT ANIMALS) 

Mohammad, a 13 year-old fighter from the Free Syrian Army, plays with a cat in Aleppo's Bustan al-Basha district October 28, 2013. Mohammad joined the Free Syrian Army after his father died during clashes with the Syrian regime. The gun he is using was his father's. Picture taken October 28, 2013. REUTERS/Molhem Barakat (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT ANIMALS) 

A Free Syrian Army fighter washes a dog in Deir al-Zor as a fellow fighter watches October 6, 2013. Picture taken October 6, 2013. REUTERS/Khalil Ashawi (SYRIA - Tags: ANIMALS CONFLICT) 

A Free Syrian Army fighter feeds a cat in al-Jdeideh neighbourhood in the old city of Aleppo August 27, 2013. REUTERS/Ammar Abdullah (SYRIA - Tags: - Tags: POLITICS CIVIL UNREST MILITARY CONFLICT ANIMALS) 

A Free Syrian Army fighter stands next to his daughter as she holds a cat in Aleppo's Izaa district December 30, 2012. REUTERS/Muzaffar Salman (SYRIA - Tags: CONFLICT) 

Free Syrian Army fighter Ahmed al-Hussein carries puppies near the frontline against forces loyal to Syria's President Bashar al-Assad in Aziza village in the southern countryside of Aleppo January 28, 2015. Hussein, 31, said he takes care of all the dogs living in the area. REUTERS/Hosam Katan (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT ANIMALS) 

A Free Syrian Army fighter strokes a cat while sitting behind sandbags in Aleppo's Sheikh Saeed neighbourhood September 28, 2013. REUTERS/Muzaffar Salman (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT ANIMALS TPX IMAGES OF THE DAY) 

A Free Syrian Army fighter feeds pigeons in Homs, May 24, 2013. Picture taken May 24, 2013. REUTERS/Yazen Homsy (SYRIA - Tags: CONFLICT) 

An Israeli soldier kisses a dog at a staging area near the border with Gaza August 3, 2014. Israel on Sunday declared dead soldier Hadar Goldin, feared abducted by Hamas Islamist militants in the Gaza Strip and said it would continue to fight even after the army completes destroying cross-border tunnels used by Palestinian fighters to attack its territory. Hamas' armed wing said on Saturday it had no clear indication on Goldin's whereabouts and that he may have been killed during an ambush in the southern Gaza Strip in which two other Israeli soldiers were killed. REUTERS/Siegfried Modola (ISRAEL - Tags: CIVIL UNREST MILITARY CONFLICT ANIMALS) 

A Free Syrian Army fighter holds a pigeon near Aleppo's historic citadel, which is controlled by forces loyal to Syria's President Bashar al-Assad, October 4, 2013. REUTERS/Nour Kelze (SYRIA - Tags: CIVIL UNREST CONFLICT ANIMALS SOCIETY) 

A sapper carries a cat to safety before remotely detonating the remains of a 80mm mortar shell in the eastern Ukrainian village of Semenovka July 9, 2014. Ukraine said on Wednesday it was confident of receiving further aid under a $17 billion IMF bailout but appealed to Western institutions and donors for further cash and credit to rebuild the east, shattered by separatist conflict. REUTERS/Gleb Garanich (UKRAINE - Tags: POLITICS MILITARY CIVIL UNREST ANIMALS CONFLICT TPX IMAGES OF THE DAY)