"ADULTS ONLY. NO PETS. Pets and children tend to annoy the animals, and then they tend to disappear. No one needs the hassle."

...Is at the top of the sign leading to the Beach. This is why.

The good news is, since this is the reforming beach, at least the kid will come back. The dog, not so much. Hopefully the kid doesn't end up with a phobia as a result.

Or a fetish.