I am currently working on a immunology and parasitology project on crocodiles for my masters, and I'd like to ad another layer to my assignment to make it a more rounded project.

I a looking for a formula to calculate body condition for crocodiles that include the girth of the tail (TW) in relation to the animals total length (TL), tail lenght (TaL) and, if possible, it's weight (W).

Does anyone know of such a formula used on croc or other reptiles? If not, does anyone possess the mathematical skills to help me out?

Cheers

Joe