Hi guys I am new and in desperate need of some help. I have a 23 week old male entire chihuahua named Brows Blue. He is the love of my life. I have had no real issues with Brows until now, he is a typical pup he chews and is given toys instead to discourage him and is still having accidents in the house. He sits and gives paw on command, he is great with children, animals and other adults but for the last 2 weeks Brows has began growling and gas snapped on 2 occasions causing bleeding. Brows has only done this when he is tired. He will get onto the sofa for cuddles then go rigid and lick his lips and then growl. He has also began doing the same with toys but again only occasionally. I have been given poor advice and have shouted at Brows, tapped his bottom and put him into the kitchen where he sleeps. I now know this is the wrong thing to do and am upset that I have caused this and made him worse. I'm not sure if having him castrated will help? Please help! Thank you.