Originally Posted by elegy
just keep in mind that at 8 months, reggin is still very much a puppy. dog-aggression often does not set in until around 2 years of age, sometimes earlier sometimes later. so while he's happy and amiable around your small dogs and around dogs at the dog park now, that very well could change in the future. i would stop taking him to the dog park and i would be sure that you're separating him from your other dogs when you're not there to supervise.
better to be safe than to have a tragedy on your hands that could have been avoided.
Yes, he is very much still a puppy and he still has a lot of maturing to do. I stopped taking him to the dog park when he turned 4 months. He has a large crate that I put him in when I leave the house. I never leave him unattended when he is out of the crate.
One thing I have noticed is that he will try to protect his two sisters (pug and chihuahua) when another dog is around. Something I noticed a couple months ago.