I took Pumpkin out for a walk, after cleaning his mouth. He had been extremely docile towards me, but I still wanted to be wary.

"Can I pet your puppy?!" a small girl squeaked enthusiastically. Before I could say anything, she reached for his head, and he nearly bit her hand off.

"I'm so sorry," I explained to her mother as he continued growling, "I don't know what's wrong with him." She gave a huff and pulled her daughter towards her, leaving.

As we continued the walk, I noticed thatPumpkin was aggressive to nearly everyone. He was only friendly with a few, strange-looking people.

What was going on?