Monster has been acting weird the last few months. Some background info about Monster: I found him when he was 4 weeks, and bottle fed him. When I first found him there were a lot of people living in my house. A few of them have since moved, but all of his life he has been exposed to new people all the time. He has never shown any aggression towards visitors. He actually always makes it a point to approach visitors whether he knows them or not, and always makes sure he gets attention from them. He has always been very outgoing and friendly to everyone. He had never hissed EVER, unless he was at the vet.
Over the last few months though, whenever a male friend of mine or my boyfriend's comes over our house, he hisses at them and tries to bite and swat at them. For example: the first time he ever did this to ANYONE, was when my brother was here. Monster had met my brother in the past, once when I moved into his house for a week. Monster hissed at him then too, but I figured that was because he was in a new environment that was weird smelling to him and he was stressed out. Plus my brother had been here many times before that, and he never hissed. But this time, a few months ago, was completly out of nowhere. Then, he did it again, when my friend Andy was over. Monster came up to him all interested, and then when andy started to pet him, he just hissed at him, and swatted at him too. This keeps repeating, with 3 or 4 more of our male friends, and another time to my brother last week. Some of these people have been here before in the past, and he had never done that. He does not hiss at my boyfriend's cousin, who he has known his whole life. It seems to be with men he hardly knows, or has never known at all. This is all completely new behavior, something he just recently started doing, and he doesn't do this with females, ever. Only men. Does anyone know WHY he might be doing this?
Over the last few months though, whenever a male friend of mine or my boyfriend's comes over our house, he hisses at them and tries to bite and swat at them. For example: the first time he ever did this to ANYONE, was when my brother was here. Monster had met my brother in the past, once when I moved into his house for a week. Monster hissed at him then too, but I figured that was because he was in a new environment that was weird smelling to him and he was stressed out. Plus my brother had been here many times before that, and he never hissed. But this time, a few months ago, was completly out of nowhere. Then, he did it again, when my friend Andy was over. Monster came up to him all interested, and then when andy started to pet him, he just hissed at him, and swatted at him too. This keeps repeating, with 3 or 4 more of our male friends, and another time to my brother last week. Some of these people have been here before in the past, and he had never done that. He does not hiss at my boyfriend's cousin, who he has known his whole life. It seems to be with men he hardly knows, or has never known at all. This is all completely new behavior, something he just recently started doing, and he doesn't do this with females, ever. Only men. Does anyone know WHY he might be doing this?