Why are so many of our pets overweight? According to the Association for Pet Obesity Prevention, 60% of cats and 56% of dogs in the US are obese or overweight. Of course, no pet owner would purposely make such grave mistakes when it comes to feeding their furry friend. Nonetheless, there are several things you should avoid so that your pet will be happy and healthy! Do you know, for example, that you should never give your pet human food? A lot of the products we humans eat contain too much salt, sugar, artificial colorants and sweeteners, and fat. All these additives are extremely harmful to pets.