"you only get one hamster in life."
Be very careful to keep those hamsters separated or you may have
1] Many more hamsters in life.
2] A frank discussion of the birds, bees, and hamsters WAY before you're ready.
Alternatively, you could prepare several answers to possible kid questions about hamster behavior:
"They're playing horsey"
"That's how hamsters dance"
"The mommies always get fat like that when they're happy" [Be very careful with that last one].
