When I got my two tabby boys they were seven months old and had never been outside or had vet visits/inoculations etc.
Once I started taking them out for walks to our local woods (right by house) they loved playing together and exploring. We very rarely encountered dogs and if we did they would either climb a tree or run back home.
On Sunday out for a walk and just off the path was a fallen tree. Jumps climbed it and Osc sat next to me and watched. Then a man appeared on the path with three dogs; a couple of terriers and a Scottie. The dogs saw Osc and ran towards him. I expected him to run up a tree but no! He ran to meet them hissing and spitting, all fluffed out. They stopped immediately and backed away. He was amazing
! the man was also impressed
We carried on our walk and as we were preparing to leave to woods we met another dog walker, this time with two medium sized dogs. This time Jumps was with Osc and yet again when the dogs ran towards them they both ran up and met them hissing and spitting. Wow! Never ever seen them so aggressive. The dogs turned tail and ran back to their owner.
I wondered if they thought they were defending me? Or maybe at age seven now they are older, more mature and more confident.