My weenie dog; weenie always will bark when the rats are fighting.(there not Hurting them selfs) And One Day we heard squeaking, too. so we looked and my rat scurried around While weenie was after her. her sister was in the cage, not out, And Pixie,(the rat out of the cage) hid under the bed. weenie got sent out of the room, so then we had a little check up on her. she's now breathing fast, and cuddled with Gypsie, (her sister).