I think that there is a time and place for everything in this World. If you are having a hard time coping with life or have a sickness that leaves you debilitated, and an animal is helping you in some sort of way....More power to you, enjoy your family. If a person is unfortunate to have a vision problem, an amazing aide for them would be a seeing-eye dog...right? Definitely, this is the one life we live and so what if there is an animal in a carrier on a bus. If you don't like pets or have an allergy, maybe sit far away from them so you are irritated by the pet. It would be nice for all parties to be respectful of each other and their spaces and individualistic lives.