Last updated at 11:55 13 May 2008

They say dogs are like their owners.

Well if these pictures of the world's fattest pets are anything to go by, there must be some obese dogs-lovers out there, as well as cat and guinea pig owners.

And while chihuahuas may win claim to being the world's most expensive canines, costing almost £90,000 over its lifetime, we're sure the food bill for these animals set their owners back a pound or two.

Sadly experts say overweight dogs are likely to die two years earlier than lean ones and have a much poorer quality of life, so let's hope the diet commences soon.

Scroll down for the amazing pictures...

Guinea PIG: A fury friend with too much fat

This squirrel has had too many nuts

Fat-out: This pooch doesn't need to be thrown a bone

Dog-gone: Less time napping, more time exercising

Bone belly: This four-legged friend is rolling in it

Sausage dog... or is that too many sausages dog?

Fur-wheel drive: This dog need to get out and walk

Fat-roll: A ginger hound with too much time on his paws

Meaty bite: A well-rounded hound

Oinker: Is that a pig or dog?

One too many mice for this fat feline