the people switching the signs are slow to catch up with animals changing enclosures.

I'd say it's this one. There was only one sign on the enclosure after all, and I'm very familiar with the wildlife park in general and that specific enclosure usually does have bennett wallabies within. It's not like me to make mistakes, but I was more concerned with getting the photos up while tired; my mistake.

Naturally people are confused and everything that hops gets labeled "kangaroo". Or "Skippy".

Thankfully = less of a hazard here!