LOL well, 9 months isnt too early. Jigsaw went into heat at 7.5 months, reba at 8.5 months, both the exact same day. we hadnt neutered Zero yet, and he was perfectly fine for the first week (we boarded him at the vet clinic for a few days durring the next week). but he came home and went absolutely nuts. He wouldnt eat, he lost bout 10lbs, and JUST gained it back. he wouldnt play ball, we had to keep the girls in the kitchen with memphis- and memphis was very interested as well, but neutered
for about a month zeros behavour was different. and he finally went back to his normal obnoxious self... and now that hes neutered, we have no real worries
Good luck with this. its not fun LOL. but, its definately not as hard as people make it out to be... when you hear "My dog got pregnant by the mangy neighbours dog" well, you shouldnt have left her un attended. its just common sense
hahahaha