A little rant, a couple questions. My little terrier mix went into heat Friday evening. Great. I was getting her spayed in October, now trying to get it done earlier. She is over a year old, and we never had an issue, just put on her britches and go, but now we have an unaltered male in the house. He's 4 months old. Our vet said he may be old enough, he may not. So now I have to sleep without my little male tonight! My brother took him to his house because Boo is only 5 pounds and he's 15-20, shes just tooooo little and I dont want mutt puppies anyway. I procrastinated and this is what I get. Do you think he could do anything, I dont know if there is a way to tell or not? How long does a heat last and when will she stop accepting the male? She's a day 3-4 now I think. Any advice, she's annoying right now, she's lovey to start and now is just insane!