I watched your video, and I really do not know what to tell you other then in my professional opinion, your male sav does not have long to live. I really really hope I am wrong. But I fear I am not.
Your sav is morbidly obese. You say its young, it appears young, which makes it worse. I could understand an old male becoming fat. But a morbidly obese youngster is horrible.
My bet is, his internal fat bodies are equal to his total weight.
You can see his skin stretch and part, during his gate. In fact, its stretched went it sits. Please consider saving its life.
Please understand, monitors grow like other animals are suppose to. They grow long and slender(not skinny) then bulk up at sexual maturity. That animal is FAT and obese.
Other then that, I see nothing unusual, the monitor knows where its support is and goes to it. About opening doors, we all know monitors understand that. Sometimes we learn the hard way. My indoor/outdoor monitors have metal doors, and they have learned to open and close them as they go in and out. I have two sliding doors, the monitors know how to open them, but not how to close them. Somehow they do close the hinged doors.
That it does not fear you or bite you is not unusual. In fact, its very normal. As I have said many times, once they know you, they just want to use you. And if you want to use them in return, great, that sorta balances out. That you play games with them is not a bad thing to me. I kinda think its better then most allow(most allow nothing). As least they are doing something, even if its not what they are designed to do.
YOUR problem is common, your house and or the cages you keep it in, ARE NOT HOT ENOUGH. PERIOD. So your poor monitor stores fat instead of using the energy. MARK MY WORDS, it will die unless you do something about it.
About the behaviors, from you vid, I do not think nothing of it. ITs not a monitor, its more a submonitor. That is, its not hot enough to behave in any normal fashion. So what you have done is meaningless to me and sad. Let that poor thing have access to air temps around 100F and basking temps around 145F and you will see a different monitor. It may not be mean or bite, it just will not put up with your crap. At least it will have its full range of abilities. Even hot, monitors are not mean, unless they are deranged by humans.
In the pic I just took, there is three young monitors, about 6 months old. They have never been held(except to be moved) or tamed in any way. They are outside and at the moment of this pic, its 95F. Ground temps of 128 or above.
It took about three feedings to get them to eat out of my hands, mind you, this is a group. As many here already understand, in a group setting, they feed in a totally different more agressive manner then when they are by themselves. Also I am feeding live food, again as many here know, that brings out a much more agressive responce. So I am doing this with a very very aggressive species(at feeding) and in the most extreme of circumstances.
So, hot untrained, untamed monitors, that gently take live food out of my hands.

So what does that say about you methods, hmmmmmmmmmm I think your fooling yourself. Because you are not fooling me.
Also I have wild lizards that eat out of my hands and sit on my lap, and follow me around, just to sit by me. WILD, not captive, and I have pics too.
But you know what, I could careless about that, your welcome to fool yourself and others, but please do something about your obese monitor. If you do not believe me, then ask a qualified Vet. Good luck and cheers




