I am looking for the reference about home range size of green water dragon, but have not found yet. How many square meters they could maintain for their territory, meanwhile they could recognize their territorial neighbors or non-neighbors.
I think you should provide at least the scientific name of the species you are looking for.
For Physignathus lesueurii for example it seems to be that J. Sean Doody A D, John Roe A B, Phillip Mayes C, Lesley Ishiyama A "Telemetry tagging methods for some freshwater reptiles" do something like that but i never find the results in literature.
give a few exact informations and you can expect a few more help i think
You might try the global biodiversity information facility (GBIF) - the hold species occurrence records and a proper search may contain the home range. http://www.gbif.org/occurrence