This is for a (very far in the future for me) Ionides or Whitethroat monitor. I doubt if I will have my monitors for at least another 10 years since I simply just don't have the space to devote to one now, but no harm in some early research, right? But also I am asking for a friend who was getting a water monitor, but against my pleas and lectures, bought a Nile monitor

It's about 24" now.... not sure about the burrowing habits of these guys though.....