My 12 1/2 month old lab is in her first heat. I just noticed it two days ago. But within the last two or three weeks she has not been eating nearly as much as she usually does. Today she threw up. I was just wondering if this is normal or if I need to take her to the vet.

Originally Posted by Raggs

It doesn't sound normal. I'd suggest taking her to the vet. Dogs should have their first heat at around 6 to 8 months old. She just had her first heat, it might be something different. It could be a medical problem. Do you give her any treats like pig ears or rawhide or anything?

I will agree that a bitch in heat does not usually vomit and would also advise to seek vet attention (because the vomitting may not be connected to the heat cycle) - however, it is not uncommon for larger breeds to have their first season beyond a year or more and sometimes not until 24 months. Mine typically have their first season around 13 months. I've two 19 month old who have yet to cycle - they are just late bloomers.

BIS