I noticed that the BFRO website has no data for Mexico. Any ideas on why? Is it the water?

There have been many reports of unknown "bigfoot" type creatures, as well as others, reported throughout Mexico, Central, and South America. The BFRO doesn't maintain any, but searching around will yield you plenty of reading material.

In Mexico three types of sasquatch like creature are known as Tse'nahaha,
Pu'wihi, Nu'numic. I am looking up my reference material to see if I can locate more info.

I'll get back to this thread when I do.

I'd found this...not much, but...

tirademan

There's some info (not much) on BF in Mexico in Sanderson's Abominable Snowmen (1961). I think I even answered a similar question a few months ago, about BF in S. America, with a reference to his classic.