How important is it to keep rats in pairs or more? For my next pet, i'm probably getting rats and i was just wondering, what if the pet store only has one rat? Can I just take it without a another one. I don't really want to do the whole introducing thing because i'm scared of what might happen if they hate each other.
Also, is there aything different about hairless ones or dumbos? I hear dumbos are more gentle and docile than regular ones, is that true? And what's different about taking care of a hirless rat than with a haired rat?
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