Rob, that's just plain absurd. It's like saying that all snakes will eventually turn blue because we'd think they were prettier. Go and read up on the subject before spouting such nonsense. The change in behaviour is undeniably heritable, it is genetic, it was bred for. The exact same principle has been used on other animals and there is absolutely no reason to think it couldn't be used on reptiles; it would be very silly to suggest this. This same type of study has been carried out many times, often with controls. I'm really flogging a proverbial dead horse explaining this, but in these controlled experiments, animals are selected at random from a wild population. All behave as wild animals. This sample is divided into two. One group is selectively bred, as with the fox example, the other group is bred at random. Both groups are treated identically in every way other than the way in which the breeders are selected. The selected lines change in behaviour, the random lines do not. Experiments along these lines (and others of different designs, which prove the same thing) have been carried out since way back when, on a range of species of a range of intelligence levels. There may have been a control group with the foxes, or perhaps not, but anyone with a tiny bit of a clue on the subject knows that the control in that case would be a waste of time. Anyone with experience in the area knows that simply breeding animals over successive generations won't change them directionally, if they're selected at random - after the first generation of captive breeding, you basically have what you're going to get, until you start selecting from a genetically variable sample. This is not heresay or speculation, as is your opinion, it is what has been demonstrated clearly by many people over a long period of time.