a few questions

how big do monitors get ? do they make good pets ? what do they eat ?

Depends on what kind of monitor, make your question more specific.
They eat crickets, worms, fish, and other things you find when they are hatclings and small enough for that.
When they get older go straight to adult mice, then to rats, and that's it.
Simple.
Try to vary their diet, it keeps them interested, and it's healthier.

ohh, sorry i mean crocodile monitors or savanah monitors.

Oooh.
Savannas are my favorites.
Alright, the average length for an adult savanna monitor is 3 feet long, though there have been many occasions where they grew larger than 7 feet.
Savannas are stricktly carnivores.
I already told you what they can eat.
Except I left out baby chicks.
Hope I've helped...

-collin

I believe any reports of Savannahs growing to 7 feet are actually of Varanus Albigularis, known as white throats or black throats. Savannah monitors, Varanus Exanthematicus, usually only reach 2 feet but often reach 3 feet in captivity. Young savannah monitors feed primarily on crickets in the wild, and remain primarily on invertebrate prey for most of their lives. Their jaws are also well developed for eating molluscs, which they do more of as they get older. The vertebrate prey they do take in the wild consists mostly of amphibians. In captivity however, crickets and rodents are the major staples in a Savannah monitor diet. You can also try cockroaches or other invertebrates. I have no idea what croc monitors eat in the wild, but would probably be fed about the same captive diet.