So what can i do how can i charge him? can i call like the local human society to see what i can do? Or like an animal officers like u see on tv?
I guess it all depends how you value the relationship with your girlfriend's father

If you want to make it a difficult relationship between him and you and possibly him and her go ahead .....all that for 12 rats that be a way to show your gratitude to him for putting a roof over YOUR head.

He wanted the animal gone from HIS house they were still there, maybe he got a little impatient doubtful it is worthy of filing criminal charges.