Originally Posted by codmaster
Did you grab the attacking dog and kick his/her behind up and down the park?
Now that's the spirit!
I'm sorry that happened. I didn't take my puppy to the dog park until he was 10 months old, but that doesn't mean he didn't have any bad experiences. A few times people said their dogs were good with others, but I found out the hard way that they weren't. One friend's GSD was great with him when he was 9 weeks old, but flipped him on his back when he was 16 weeks. Maybe that's the magic age when the "puppy pass" starts to fade? My mother's dog attacked him too....and every time I felt terrible.
Don't beat yourself up, although I know that's easier said than done. I'm going to go against the grain and say you should go back to the dog park, but try to find a time when nobody is there, and have a really good time full of extra special treats and games. I would - I took my puppy to the dog park the day after my mom's dog attacked, so he didn't have lingering bad impressions about other dogs in general.
But I wouldn't let him play with any other dogs there, not unless you know that they're friendly. And if someone shows up before you have a chance to leave, and it looks like trouble, don't forget codmaster's quote above!