Ok, I have a Nile monitor, not a clue on sex, about 1.5 yrs old.
Ive been told these animals, with "proper husbandry" can grow to 4 feet in the first year. My animal is only about 32"-34" long. The tail is think and it eats well, is alert, and shows no sign of sickness or displeasurement.
Its diet has been varied and plentiful all its life, including crickets, fish, shrimp, snails, mice, froglets, geckos, chicks and just about anything else that went into its cage. Many of these items were dusted with calcium/vitamin mixture and/or were gut loaded. For the first 6-8 months or so, I could hand feed the animal small feeder fish, holding them by the tail as it snapped them from my fingers (and never once did it bite me during those feedings).
Its had access to fullspectrum lighting, including UVB all its life. Its had a basking spot thats constantly maintained at 95-100 degrees, a lowered hide box and a pool of filtered water for soaking, drinking and thermoregulation that I spot clean twice daily and change once a week.
I kept it in a 75 gallon tank up until about 2 months ago, when I moved and transfered it to a 125 gallon tank. Its now got a much larger pool with better filtration, a rocky hide spot and a large area of mixed substrates for digging burrows (which it has done to an amazing degree). The substrated area is heated from above by a heat bulb and a second, higher watt heat bulb is placed above a log that serves as the basking perch. The cage also has UVA/B bulbs.
The water area is about 6-8" deep and takes up about 1/4 of the cage, which in a 125 gallon is a relatively large area (more than enough for then animal to submerge its entire body easily. I place snails, shrimp, crayfish and fish into this area and he hunts them out at his leisure. As I said, I keep it quite clean.
Im wondering what the problem could be with my animal, as I feed it 3 times a week, 3-5 live adult feeder mice per feeding and it gobbles them up greedily. This does not include the feeders in the water area mentioned above that it consumes (usually 2-3 crayfish per week, along with 6-10 fish every 2 weeks). Its tail is thick and it appears healthy. Should you attempt to pester it (aka, handle it in just about any way), it gives you a viscious demonstration of how healthy it is. Ive had some success when I try to solo handle the animal, as Ive been with it for quite some time and it recognizes me, but due to some mishaps, its not very social (once when I was taking it out of the cage, it whipped its tail and somehow managed to slap a heat bulb- the bulb was unplugged, but still hot, and the lizards tail was wet... boom. me, my friend and the monitor all staring wide eyed at each other, not sure who it was exactly that made the lightbulb explode).
Im planning on adding 2, 65-gallon reptarium (netting style) cages that I have to the top of this setup. This would give me the ability to increase climbing and basking areas, as well as add some large live trees (ive tried adding live plants, and the only ones ive found arent destroyed quickly are floating water plants and large live trees). The total area would be the equivalent of a 255-gallon enclosure.
I know this wont last for long, but will it be suitable to house the animal for a few months until I can build him a larger setup this summer, something more like 8' wide x 6' tall x 6' deep. With the snow outside, its just too hard to get around right now.
Also, why is my animal not growing? Its not that I mind it taking its time with gaining size, but Im worried there may be a health issue. Is there a wide range between male and female monitors? Any thoughts?










- Mike