Your pet will probably do better eating commercial pet foot. It is well-balanced and nutritious. A mixed diet of canned and dry food is suggested. A trial and error method will tell you what types and brands your pet enjoys most. Treats and table snacks ar OK on an occasional basis but in the long run they are not well suited for your pet.
Chocolate is particularly bad.
By the way, don't forget to always have plenty of fresh water available. Traveling With Your Pet. As a rule, dogs love going in cars, and cats don't. If you have a dog, make sure it is on a leach when you leave you car. Use special seat belts made for dogs.