Veterinary scientist, Dr Alex German and veterinary nurse, Shelley Holden are joining presenter and vet, Mark Evans in a new Channel Four series exploring the secret life of dogs, the first of which airs tonight at 8:00pm.

The three-part series looks at how people's lives and those of their dogs have radically changed in the last 50 years.

Using hidden cameras, episode one investigates how dogs gain weight when their owners are not present or out at work, as well as what research is being done to understand the UK's obesity epidemic in dogs and cats.

Alex, who is head of the University's Weight Management Clinic, said: "Obesity is common in dogs and can lead to a range of illnesses and diseases.

"Although treatment for weight loss has been in existence for some time it has not been without its problems, and owners, with busy lives, can find it difficult to even understand how their dog has gained weight in the first place.

"By showing what dogs get up to out of their owner's sight, this programme explores how understanding our animals' behaviour and habits can help in producing a healthy diet and exercise regime."

Dr German has also contributed to the Channel Four website, which provides information for owners and access to case studies: http://dogs.channel4.com/fat-dogs/

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