Oh no! Glad no one was hurt. Poor Teddy has had many experiences like Fletch's. He wants to be friendly, but then the other dog attacks him.
Some dogs just do not like each other. Max gets along with most dogs we meet, but there is a Westie boy who challenged him. They were sniffing noses, but then their bodies tensed and they were staring into each other's eyes. The other human and I knew it wasn't good, so we went our separate ways.