What should I do if my dog has a cold?

I agree with Shannon, keep close eye on your pup

If she has a cold, benedryl is safe for dogs but whenever I try it it's completely ineffective. But every dog is different, give her some boiled chicken, rest, lots of water and a warm area to sleep. It should go away on it's own, but if the symptoms worsen take her to your vet, there are deadly dog flus that have taken many many dog's lives.

Good luck! :)