I had the same question last summer and stumbled upon another forum that had debated the same question. By time i read through the arguments of being "city owned", "not an ammusment park", and "improper posting," i decided I did not want to go to court to find out who was correct.
IMO, its up to you to understand the law and be prepared to deal with the risks and possible consequences. Wish i could give you a yes or no answer.

The answer is "NO". There are new signs posted a few weeks ago at both public and employee's entrances.

So what do you do if a dang guerrilla jumps over the wall again?

I haven't been there since last year, so if they changed their signage, then it's probably done correctly now. I doubt that their 30.06 intent has changed since then. So, I personally wouldn't carry in there. I'd go over to the FW Zoo, anyway.

Run faster than the moms with strollers?

I guess acting like a banana and trying to split, would probably be detrimental in this scenario.

The property itself is still owned by the City, but the critters, the management, and maintenance of the entire operation is by DZM, Inc. (Dallas Zoo Management) a non profit orginazation.

Sign or not, I would carry in that neighborhood.

Weird, you can carry at the State Fair, but ya cant bring in a knife ! Of course the Rhodes scholar that wanded me be missed the kimber full size completely. Kinda make me feel safe.

Anyone know if it is legal to carry at the Dallas Zoo? Going Sunday with some family.

I have heard that there is a 30.06 sign posted, but it is not correct and in English only, thus making it invalid to my knowledge.

Anyone have the answer?

I haven't been there since last year, so if they changed their signage, then it's probably done correctly now. I doubt that their 30.06 intent has changed since then. So, I personally wouldn't carry in there. I'd go over to the FW Zoo, anyway.