It is a common myth that a name says something about the owner and even influences the owner. So most names of e.g. biblical origin have a meaning and it is usually positive.
Although I know that is not true in a pure scientific sense I think it has a cultural value.
I wanted Tigris to have a proud name and Filou a mischievous name.

A cat named Hitler or a hamster called Stalin? I would think this would make the original bearers of these names sound harmless. So I wouldn't ever do that.