Top Ten pet lizards
Ever think of a reptile as being a social animal? Just take a look at their evolutionary ancestor—the dinosaur. There were a multitude of dinosaurs that roamed the land, hunting and eating in herds or packs. But that's not all! Don't forget that the closest relative to the dinosaur is believed to be the bird (followed by the crocodile), and birds, which fall into a reptile sub-group, are very social animals.
So how social are reptiles themselves? It would seem that not many vertebrates are sociable (at least not to others of their kind.) Modern reptiles usually aren't found in groups and when they are, it is mostly due to sexual urges geared towards reproduction.This solitary nature can pose a problem for the pet owner who wants to own more than one reptile species, and housing more than one in the same area may lead to stressing the animal. Some lizards and snakes should never be housed together due to the risk of fighting (adult male iguanas are an excellent example.) As far as sociability goes, there are actually many reptiles that are social toward humans, snakes included! Here are a few of them:
The Bearded Dragon
The most sociable reptile it seems, is a lizard called the Bearded Dragon. Reportedly this friendly lizard makes a very good pet which really likes human interaction and attention. Oftentimes Bearded Dragons aren't compatible with other Bearded Dragons (which contrasts with the Gecko, next on our list, who appears to get along with others of their species) although the bearded dragon tolerates being handled without any problems.
Geckos are an exception to the solitary rule. Housing a group of females with one male is a common practice, especially for breeding purposes. Take note however, it still stands to reason that housing more than one male in the same enclosure can lead to fighting. Still, geckos are not that aggressive and they tolerate handling well.
Turtles & Tortoises
Turtles can be housed together if they're the same size and not nipping each other. But more aggressive turtles like snapping turtles, mud turtles, musk turtles and soft-shell turtles should only be housed with turtles of similar size and species.
Tortoises and Box Turtles can usually be housed with similar turtles in groups, but use a very large cage. The most gentle are land turtles and tortoises which can be housed together without any problems because of their gentle nature. It is still advisable to observe these turtles for any negative signs and then take the appropriate action (just in case of negative interactions.)