[GarterGuy]

Pretty much agree with the above, definitely make sure they're approx. the same size, just so one snake doesn't intimidate the other (has happened, that one will just become "dominant" over the other), also be really careful over feeding time....a lot of cannibalism is actually two snakes fighting over the same prey item and one snake swallowing the other along with the prey. Garters usually have a VERY strong prey response, so this will be something to watch out for. The biggest thing is definitely quarantine your new snake, for maybe a month at least, to make sure it's healthy and all before caging it with your healthy snake. One final note, just for the record.....T.sirtalis and T.radix have both had documented cases of cannibalism...it may be rare, but it's not impossible.