A dog weight loss product recently launched in the UK aims to help solve the rising problem of pet obesity.

Pooch & Mutt developed the Slimmin' Tonic to be added to petfoods, either by sprinkling it on top or by mixing it with water to make a "gravy."

"It is by no means a magic-pill for fat loss, but it will certainly help. Slimmin’ Tonic should be used in conjunction with a healthy diet and exercise," the company says. "As well as actively reducing a dog’s appetite, Slimmin’ Tonic will help your dog to turn the food it eats into energy at the same time as helping to build muscle. This will help your dog become more active and therefore healthier.”