LONDON, ENGLAND - DECEMBER 28:  Jenson, a two-year-old Jack Russell Terrier, who is looking for a new home, sits for a portrait at Battersea Dogs and Cat's Home on December 28, 2016 in London, England. His owners brought Jenson into Battersea because they were no longer able to care for him. According to the charity, "This young boy is a lively terrier who is looking for active owners that can keep up with his fun and games. He will make a cracking pet for fun-loving owners who have the time to train him". Battersea Dog's and Cats Home was founded 150 years ago and has rescued, reunited and rehomed over three million dogs and cats. The average stay for a dog is just 28 days although some stay much longer. Around 550 dogs and 200 cats are provided refuge by Battersea at any given time.  (Photo by Dan Kitwood/Getty Images)