Diesel was purchased from a local lady on an FB group and simply said she was rehoming him because she just had too many animals and too many small kids. She said he didn’t have any issues. Since that time he started lunging and trying to be aggressive towards 4 people and 2 other dogs (dogs larger than him). He does chew and display puppy behavior if he gets bored and left outside too long which is normal. He stays indoors majority of the time. He is house trained. He goes to bed in his kennel when told. I just won’t allow an aggressive dog that I can’t figure out his triggers on.