well a pit bull is a challenge for a first time at the dog park….i probably would have done the same and it is always wise to be cautious when dogs are off the leash.
usually a good dog park (fenced, I mean) will have two areas distinguished by dog size.
start with the small dog pens and if you feel comfortable try the large.
i have found in my experience with dog parks that there are different types of play. i am not sure if it is based on size or breed.....
typically I feel that the large dogs tend to be more mouthy in play and are a bit rougher.
basenjis will box during play which I have seen in the smaller breeds.....
if you are unsure, dont risk it.
barking can be talking....watch your basenji for the signs....hair standing up on their back and neck means they are showing they are a larger dog, scared, excited.....tense.....if their ears go down.....you may want to try a different form of socialization first
just stay in control...use your mommy eyes, stick with your instinct....caution is always best....
basenjis are capable of being with large breeds, but start small and work to your comfort level....