<human>: Can you give me a shortened version of the text?

Hi. So I was planning on taking my year old lab/collie mix to a dog park. I was going to have her stay around outside the park (nowhere near the actual dogs, just far enough to see them) so she could see the dogs but wouldn't be able to get to them since it's gated off.

Some extra info: She wasn't well socialized as a puppy. When I take her for walks and she notices someone or a dog across the street she tries to pull towards them. If someone is walking on the same side as me and is close enough she'll growl and bark. I also tried introducing her to my grandma's dog. In reaction she lunged towards the dog but didn't bark but her tail was stiff. From behind a screen door she barks and scratches at the dog.However if I have a friend come over and introduce her to said friend she'll be fine, she actually gets excited and wags her tail. 

I have also considered muzzling her but would rather not.
<bot>: Dog does fine around people she knows, gets aggressive towards any dog she sees. Thinking of taking her around a dog park.