My dad used to work as a bus driver for nearly 30 years, it's super annoying and inconventient for animals to sit on the seats. Not only is it dangerous and distracting, one bad turn and the pet flies through the bus. Not to mention the seats are not made of plastic, the fabric is difficult to clean. Dogs are often wet, muddy, covered in dirt/grass. Sorry but it's disgusting and you don't get the smell out! The staff has to clean it and it's a shitload of work! If you do put your animal on a seat, at least take blanket with you to cover it. Not everybody wants to sit on a seat covered with dog hairs. It's really so rude. ESPECIALLY when you let them sit on the special seat reserved for handicapped/elderly folks.