Aggressive blue nose pit
I live with my daughter and her one year old blue nose pit. A male. Lately, as soon as she leaves the dog will come sit in front of me and stare. Then all of a sudden he barks and then lunges at me. He is quite large and heavy. Usually I have time to put my foot up on his chest to stop him. Last nite he lunged 3-4 times and then started racing thru the house. Any idea why he's doing this and how to stop him. He's lived with me for two months.