Anything frozen is WRONG! My sister is a vet and she reminded me of a time 20 years ago when people were doing this and their dogs were dying. The frozed water or what ever you use is harmfull to the dogs system. It creates shock and they die. I personaly have seen this happen 20 years ago. Do it if you want but don't go crying to someone when your dog dies.

WRONG!!!! Do not let your dogs chew on ice!! They can break their teeth on the ice and then you have a HUGE vet bill. Freeze carrots and give them as frozen treats. Be careful on the amount because they are high in sugar.