In my household I am the one that feeds/waters and if necessary handles the larger T's. My 10 year old helps with all the slings so isnt around the bigger ones much. However she gets quite a reaction from them when she happens to be over by their enclosures, they come up to the side. Maybe I am way off base here but I believe they can tell the difference and are smarter than some people give them credit for. Just wondering what everyone else's take is on that?