I have taken my puppy to dog parks. He didn't actually have a good come at home, but for some reason at the dog park he listens very well to me. (He listens to me better at home now thats hes older).
I usually take 2-3 dogs at one time, but the most I took was 4.
It all depends on the dog park, and how well you watch your dog and observe other dogs. I know which dogs will cause problems, so I leave when those dogs and their owners come. I am very careful at introducing my dogs to whatever dogs come.
We have about 4-5 dog parks here. Theres only one I go to, and the same people go to it everyday..sometimes new people I have never met before come, but I introduce my dogs to their dogs and see how it goes.
I have never had a problem with dogs trying to harm my dogs.
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I have 5 dogs who go to the dog park with no problem (Harry-Dachshund who just fetches the entire time. When other dogs come up to him he just ignores them, Cartman-Dachshund who usually hangs out with me the entire time, but does enjoy interacting with the other dogs..but doesn't wander away too far from my side, Bjorn-mutt who is a bit fearful of large dogs, but will easily go play with small dogs, Zen the 4 month old Pug/Beagle mix who LOVES playing with any dog, and loves meeting the people. Hes the one I have to keep a strong watch on so he doesn't mess with a dog who doesn't want to be messed with.) And then Elliot (Dachshund) who usually follow his dad (Harry) around playing fetch, and he is great with other dogs, but he doesn't like to play with them at the dog park.
And then I have dogs I KNOW are not dog park material. Brad-senior dachshund mix, he can get aggressive with people and other dogs and also has arthritis, Charlotte-JRT/Chihuahua mix she is very possessive of me, and would start fights with strange dogs, Reese and Bob-3 year old dachshunds they could be dog park dogs, but we didn't do a good job socializing them with other dogs outside their pack when they were younger, and Bob sits there and barks at everything when we went the first time, and Reese was TERRIFIED. So they have the potential and I am working on it.
I have taken Peanut (Chihuahua/Italian Greyhound/Rat terrier) before, and he gets really excited to go...and then when we get there, he jumps at me to pick him up, he has thrown up a couple times when he was displeased (Don't know what thats about.) He growls at the other dogs if they come near me. SO I won't bring him anymore, I just walk him. Jannah (Dachshund) is VERY dog aggressive. I took her to PetSmart not too long ago, and my best friend and her dogs came. Jannah was growling at them the entire car ride over, and trying to bite them. I don't know what is up with her, when she was a puppy she met lots of other dogs and people, and used to be very submissive she would even pee on herself..but now shes turned Dog aggressive. And then lastly is Daggett (Dachshund) who is currently losing weight. She has had breathing problems when she gets too active..so I haven't brought her yet. I think she would do just fine though.
I would add that dog parks are for already exercised dogs; they are not for exercising your dog.
I disagree with that. I take Harry (12 year old Fetch-o-holic dachshund) there to burn his energy. He fetches ALL day long at home, and can become quite a nuisance to use with his constant wanting us to throw his fetch toy. So I take him to the dog park where a lab owner whose there every night enjoys throwing his ball for him, or whatever kids are there will throw his ball and he comes home a tired boy, who could care less about fetching. And then Zen (My pug mix puppy) I take to socialize and to burn his puppy energy. So..it can be used for exercise, and thats what a lot of people do at the dog park, play fetch or run around with their dogs to burn their energy.
I also take my dogs to play sessions with my best friend's dogs.
They're not really a good plan for toy dogs, unfortunately.
care to elaborate?
And as for pit bulls, there are a LOT of well behaved pit bulls we have at our dog parks.