Mom, dad, baby (in stroller pushed by dad), dog (on leash held by mom). Dog breaks leash, runs into street, gets hit by a car. Car is not speeding, not driving recklessly, etc. Dog is badly injured. Car is damaged. Car owner wants insurance info (homeowners/renters) of the dog owners so that he can get his car fixed. Owners refuse, freak out at driver for daring to ask for such info after hitting their dog. Cop at scene tries to talk driver out of it 'because of the circumstances."

Who should pay for the damage to the car?

** note - this is an incident I witnessed earlier today **