[QUOTE="MrGeezer"]
Actually, many monitor lizards are a lot different than other reptiles in terms of travel. Snakes will largely sit around and wait for food. Many smaller lizards will occupy a smaller area and wait for bugs to get near them. But when it gets into the larger monitor lizards, things change. Once we start looking at the large predatory lizards, they hunt a LOT more actively than most other reptiles. We start getting into mammalian behavior here. In these cases we can see lizards tracking prey over large areas by scent. We also see lizards having wide and regular roaming patterns, designed not only to find food but also to establish its territory. These animals often aren't JUST looking for food, they're literally often simply patrolling their territory in order to defend their patch of land. Much like other predatory mammals such as wolves. And it's not random either. Look at patterns of movement, and you also see monitor lizards patrolling a LARGE and predictable area, regardless of how well-fed they are.
Snakes are one thing. They DON'T tend to move around a lot as long as they're well-fed. Smaller lizards are a lot like snakes too, in that they usually stay in a pretty small area. But many of the larger carnivous lizards are a LOT more active, a LOT smarter, and patrol a MUCH wider area of ground even when they ARE well-fed. Especially in the larger varanids, we start seeing behavior that much more resembles the habits of many larger predatory mammals.
Lord_Daemon
Well honestly the giants of the reptile world do tend to exhibit rather unique behavior than is common for most of the their species. I can't say that I'm well-versed enough to know each types particular social, territorial, or lack thereof, characteristics so I'm just stating general qualities of lizards. Even in the snake world I've noticed a rather dramatic intelligence swing from those that feed on water oriented prey (dullards) and those that hunt endothermic prey (smarties). Komodos do a lot of things that most lizards wouldn't typically do such as jogging for miles at a time which is just about the scariest ******* thing that I can imagine! However if they were extinct and you were to suggest that they did so you would labeled an idiot by the scientific community at large.
But yes, I will admit that monitors and the large lizards in general get around more and are quite a bit more active in their hunting. But it does take them a bit longer to get acclimated to their surroundings as again...somewhat simpler brains with quite a few less neurons firing in their wee cortexes so their reasoning abilities are quite a bit slower than a mammals. That being said if it had enough time and had enough food around for it to get used to its surroundings I have no doubt that it would eventually start hunting the neighbors pets as it slowly expanded the area it roams.
But as far as a comparitive betwixt a cat and a large lizard released into your backyard, the cat -- being socially attached to its owner -- would be much more likely to come back very quickly. The lizard...not so likely unless you had really, really worked hard to teach it come to you for food.
That's an interesting note. Which kind of works both for and against the comparison with cats.
For example, the lager and smarter predatory cats will (like cats) have a need to roam around. In the case of both cats AND large lizards, this natural range of territory is likely to extend well beyond the range of the average person's home. Whether you have a cat or a large monitor lizard, they are both likely to WANT to escape. Even if they have ample room to move around, their natural urge to wander is likely going to make them want to get out. You CAN keep them confined, but that'll likely make them bored and cranky, and they'll be more likely to shred your furniture simply because they're bored.
But on the other hand, if you let a cat and a large monitor lizard go, the cat is more likely to come back. The cat doesn't have to eat as often, and that's going to be one of the main things getting the cat to come back. Furthermore, cats are going to be more inclined to actually LIKE you (even though I maintain that most cats DON'T like their owners). Both of these things are going to contribute to the cat at least coming back. Whereas once you release the monitor lizard, you're probably never going to see it again. So in that sense, it's not an entirely fair comparison. Release a cat, and you can still reasonably claim that it's still "your cat" since it'll probably come back eventually (provided that it doesn't die). Whereas once you release the monitor lizard, it's gone. It's not gonna miss you or its home, it's just plain probably not coming back ever.
But yeah, those big monitor lizards are some FASCINATING animals, and just creepily smart for reptiles.
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