yea it is quite important that they are released from where they came. Snakes are very territorial. a couple of sites i work on, i know exactly where the red bellies live, never changes, same snake, same rock, everytime i see them. I cought a baby blue tongue from my partners front step in fear of the dogs getting it (was tiny!) kept feeding it things that i found in the yard, and made him hunt for them (i didnt get him too house trained) got a hold of a friend who worked in animal management. He said, the native animals have rite of way over domestic pets, so legally, he should be released back into my partners yard. he said they cant re home him somewhere else as if there is already a bluetongue in the area the dominance will come out and one of them will be injured or killed. its a hard subject releasing animals back into the wild.