Article in the Sunday Telegraph
"Researchers for The People's Dispensary for Sick Animals found that in the past year there has been a 10 per cent increase in the number of overweight animals.
Around 500,000 pets are affected, ranging from cats and dogs to rabbits, rats and even budgerigars.
They are suffering symptoms identified with obesity in humans, such as low energy levels, breathing problems, arthritis, asthma, diabetes, liver and heart disease and poor fertility."
It's the high levels of salt in junk food that cause the pets to become obese because of fluid retention. Pets need to be fed food which contains little or no added salt/sodium.
See Lose weight