My name is Apollo!

Apollo joined our family about two years ago when a friend of mine could no longer care for him. In that time I have house trained him and taught him a few basic tricks. Apollo will be 4 in September. Apollo is a big sweet baby and a big protector since he is a guardian breed. He is very good with my other dog and my cat. He has shown signs of aggression towards other dogs though. He also has shown aggression towards kids that are not my kids or his previous owners kids. He has also shown aggression towards random other people and I cannot figure out his triggers. He is mouthy and barks quite a bit since he's on guard most the time. He's got a bit of food aggression. He's very smart, a great security dog, and a big sweet boy. He loves nothing more than to cuddle up with me or to go on walks. I recently went through a divorce and I don't have the time he needs anymote and he is spending too much time in his crate. He would make a great pet for someone without kids and maybe a farm.