ogonhime
Dogs are much better (and easier) to get along with. If
a cat doesn't like you at first, it's most likely it will not like you latter on. It's like it starts to trust you, but if you leave later on, it loses all memory of you even being there.
Depends on the cat.
Like all animals, it takes a while for a domesitic animal such aas a cat and dog to get use to a new person. My calico cat didn't like guests much, then she softened up and enjoys company over.