I just got my second boy. They fight over dominance. Romeo (youngest) came from a litter of 3 girls and him. But the fights aren't bad. It begins as what looks like harmless wrestling then before you know it one is humping the other. Romeo isn't neutered though cause he is only 2 months old and I need to wait until the end of July to do so. But Jack is. Each pair of dogs are different. What somone else's dogs do will be different than yours. But my boys get along better every day and Jack will actually tolerate being next to Romeo now. Just be prepared for hurt looks from your first baby so pay extra attention to him. I'm still hoping mine get better.
