We have a 6 year old male beagle named Bobo. Bobo has had issues in the past with being very possessive around certain things (especially food, bones, and tissues/napkins) and has bitten/snapped/growled when someone has tried to take these objects away. When he bit (left indent marks but no broken skin) my oldest son, a baby at the time, who had just become mobile and grabbed a tissue from Bobo, I was very upset and got the "Secrets to Dog Training" materials. We did notice improvement in Bobo's behavior after we better established our role as Alpha, and it got to the point where our son could grab things away from Bobo without a problem. Bobo definitely wasn't problem-free and did have another biting incident with someone outside the family (who grabbed Bobo from behind by the collar to take a napkin away), but for the most part, he seemed much more mellow, especially with advances from children.
Well, now for the problem at hand. We've since had a second son who is now learning to crawl and get into everything. Today Bobo was chewing on a bone, and this son crawled over and was reaching to grab Bobo's bone. I was concerned and told my son "No." My husband, though, said not to worry since Bobo had mellowed and wouldn't be aggressive. Unfortunately though, when our son went to grab the bone for the second time, Bobo bit him (not breaking the skin, but enough to send my son into tears and me "through the roof" with anger). I'm a very laid-back person, but if anything/anyone threatens the safety of my child, I become as protective as a mama bear. If it were up to me Bobo would have been sent packing when this happened to our first son, and if it weren't for my husband and his loyalty to this dog, Bobo would definitely be shipped out at this point! In spite of my anger in this case and my lack of undying loyalty to Bobo, I am never violent with Bobo (usuallly squirting Bobo with the water bottle and raising my voice is as aggressive as I get to scold him for an offense). If it's possible, I do want to make it work (for my husband's and Bobo's sake) so that we can keep Bobo, while getting rid of this possessive aggression. I fear my children, myself, or others being bitten by Bobo and want to ensure this behavior is "nipped in the bud" before serious damage is done to someone. I'd appreciate any helpful advice you can offer this "Mama Bear" seeking to protect her cubs. Thanks so much!