Are dogs good with a new hamster?
NEVER trust a dog with a hamster or any rodent. Dogs are
naturally hunters, and sadly will try to kill and devour small
pets. If you want your hamster to meet the dog, have the dog on a
leash and the hamster in a run about type of ball or cage so the
dog can see the new friend. Very closely supervise and NEVER trust
your dog with the hamster no matter how docile either one is.