The user User:Geroge Boggs is vandalising the Wildlife Park wiki as seen here  by adding false information, which is something he has done across numerous other wikis and gotten banned for. Problem is, there do not appear to be any active admins on the wiki, so I'm not sure what to do.
Here's how disrespectful he's being, to the point of editing warnings. 
If there is evidence of vandalism across different wikis or a wiki doesn't have an active administrator, you can contact the VSTF to help with the situation provided that the vandalism is clear.
You could also try to message the bureaucrat of your linked wiki, since their talk page doesn't seem to have any message except the preset founder welcome. They could promote you to block vandals in the future. If they don't, then you can attempt to adopt the wiki.