Going Batty

We're in the midst of learning about bats. Very festive, right? I was talking to the kiddos about how bats are mammals. 

Me: How do we know that bats are mammals? 
Kiddo: Because they're nocturnal. 
Me: Are all mammals nocturnal? Are we nocturnal? 
Kiddo: Hmmm...yes. We are! 
Me: Are you sure?
Kiddo: Teenagers are nocturnal! They stay up all night long. 

Adorbs!