It depends on the situation. If the person is just lazy and doesn't care enough about their pets to name them, then its bad. If a person, like me, has 30 cockroaches and numerous fish, then its hard to name them all, especially if you can't tell them apart. No name can be a name too. We call the neighbor's stray porch cat no name because he's nobody's cat really, he's a drifter, its his character (but when I'm out of college and in my own house the cat is mine!).