Proin is an aid in the management of urinary incontinence in dogs. Proin requires a prescription from your veterinarian, and is considered a controlled substance in Arkansas, Iowa, Louisiana and Oregon. Proin is unavailable to be shipped to Arkansas, Iowa, Louisiana, Oregon or Internationally.
Best Answer: Dogs are in heat for 21 days. There are three distinct stages of the heat cycle. The first one is the âProestrusâ and it is during this stage the owner will often notice the bleeding from the vulva. The bleeding itself can be slight or she can leave evidence of her condition everywhere she sits or lays.
Report Abuse. Dogs can go into heat at 6 months. I have 5 adult dogs. 3 females. 2 males. The latest I've ever seen a first heat period is 9 months old. It depends on the breed, most vets advise if a female hasn't had first heat by age one, to come in for a full exam. It could be that she was born without ovaries.