Think ... the biggest loser ... pets version.

These animals in England are among 11 dogs, five cats and two rabbits that are either obese or morbidly obese - carrying 20 to 50 percent more than their ideal body weight.

The People's Dispensary for Sick Animals aims to help them slim down.

Some of the animals are as much as 80 percent overweight.

Veterinarians are also working with the pet owners on a new regimen to get their furry friends in a healthier state.

The winner of the competition will be announced in September, and the owner will receiving a year's worth of pet food, and a pet-friendly holiday at a Four Seasons hotel.