Aggressive 8 month black lab
We've had Shelby since 8 wks old. She is a smart, loveable and loves people and other dogs. She was spayed at 6 months and within the last 6 weeks has gotten aggressive just towards me. Lunges growls and tries to bite down. Tried to ignore but impossible. She's quick. Doesnt last more than a few minutes but seems like a lifetime. Any suggestions might help.