Is there a dog park at Treaty Park?

Yes, 2 areas. For both small and large breeds..

There are 2 dog parks in same area. 1 for smaller or larger dogs.

Yes. Two of them. One for bigger dogs and a smaller one for smaller dogs. They are up front buy the skate park.

Yes. One for small dogs and one for large dogs.

Yes. Right up front. But as long as your dog is leashed and you pick up after them, they're welcome in the rest of the park too.