Two cockapoos who are brothers. Help!
We got our first cockapoo (Harkley) when he was 8 weeks old from a breeder. We socialized him and trained him and everything was wonderful for the first year. The second year, he started nipping at children who would try to pet him. Now, he is 9 years old and no one can pet him besides me and my husband. He will even bite our kids so they just don't try to pet him ever. He is very lovable towards me but there are times when he will growl at me when I put him in his cage for the night. I believe he has terrible anxiety and fear.
The second cockapoo is his blood brother (Snickers). I took him in after my parents' passed away. He has been with us for 6 years now and he has his own aggression problems towards other dogs. So walking them is not pleasant. Lately, he has shown aggression towards people when we walk as well as me and my husband. Plus he is a bully to our other dog, Harkley.
They are also terrible when people come over. They bark and jump and I cannot get them to calm down. I have tried the reward method. I have had a trainer and a behavioral specialist but nothing can work because the kids are afraid and it would take all of us to be on the same page to possibly work.
Can someone please give me some advice. This is really starting to cause stress in our family.