I do not view animals as being "equal" to humans. I believe we are all animals and humans just happen to be at the top of the food chain. However, I believe that we are responsible for the animals that we domesticate and if we choose to have them be companions, we are responsible for their quality of life. I think it is morally wrong to abuse and neglect them.
One does not have to see another life as being "equal" to treat it with dignity and respect.