Hi, my name is*****'d like to try to help Lenny.
Is there any way you can show me a picture of the growth protruding from his vent area?
Thanks! Any information you or your granddaughter can provide about Lenny's care is helpful to me. I like to think of reptiles like plants - they need the right soil, moisture, food, sunlight, etc. in order to thrive. So if you can tell me what substrate (bedding) he is on, what the temperatures and humidity in his enclosure are, what types of heat and lamps he has, and what he's eating/what vitamins and supplements he's on, that would be extremely helpful.
Yikes, that is a very thin tail. And his feet look pretty dark, too. The swelling looks primarily right sided. In the short term, I'd recommend soaking him in a shallow dish of warm water for 10 mins or so to gently clean the stuck-on sand from his vent. Then take a new pic and send it to me.
Does he have an undertank heater or any ceramic overhead heating lamps?
The water? Yeah, warm but not hot.
Okay. And does he have a thermometer on each side to measure a cool side vs. a hot side?
Okay, and the warmer side if the one reading at 70 degrees?
Okay, and the warmer side is the one reading at 70 degrees?
Good, so I think we may have identified a source of a problem. It may not be the only thing, but it's an easy fix.
The cool side of a leopard gecko's enclosure should be kept around 70-75 degrees, but the warm side should be closer to 90 degrees. If they aren't warm enough they cannot digest their food or metabolize calcium properly, so it can lead to major problems. What is warm enough the summer can quickly become too cold in the winter, especially if the enclosure is close to a window. So sometimes we have to add an undercage heating mat or an additional heating lamp in the winters.
It looks as though he may have a prolapsed cloaca. This can be due to straining from sand impaction, constipation, straining from parasites, etc. He really needs to get in to see a vet as this tissue can become necrotic and require surgery. In the meantime, keep the tissue healthy by soaking him daily just like what we described above. Increase the heat on the warm side of his enclosure to 85-90 degrees by purchasing either an additional ceramic or red bulb heat lamp, or an undertank heat mat that sticks underneath the glass of his aquarium. Do *not* purchase in-cage rocks, etc. that heat up - I've seen severe burns from those. I would also recommend using cage carpet rather than sand, as it can cause impaction.
Here is a basic care sheet with guidelines for heat/humidity, etc. husbandry for leopard geckos: http://www.avianandexotic.com/care-sheets/reptiles/leopard-gecko/
Based on what you've described, I suspect that a large part of Lenny's issues are due to some husbandry deficits that require improvement. The vast majority of reptile health problems are husbandry-related. This sheet outlines the basics for making sure that all of Lenny's needs are being met.
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