My pet ball python (I’d had him for about 3 months now) was fine last night. I got him from a reptile expo back in December from a breeder. I cleaned his cage with vinegar and water solution and put him back in his cage along with a branch from an evergreen tree I’d found that I thought he may want to climb on.

I remember having read back in December that those branches could be harmful, but I figured since there was no scent on it anymore, he would be fine. I woke up this morning and he was dead, and I have no idea why.

Humidity levels were fine, temperature was fine and he’d just eaten on Wednesday. He used to be uninterested in feeding until I fed him live for the first time last week. I’m so afraid that I killed him but I did so much research and he seemed so healthy last night.

I loved him very much so any advice on what may have happened would be greatly appreciated, thank you.

  • it seems like maybe he was severely dehydrated and i didn’t know it.
    – Maddie M
    Mar 17, 2019 at 23:18
  • Did he have access to a waterbowl? If so, dehydration is not likely to be the cause. Additionally, he recent meal should also have helped with that.
    – JAD
    Mar 18, 2019 at 6:23
  • What was the temperature like - did you have a reptile heating pad/lamp, as well as a cool place to be? My sister has a ball python that I've helped her move recently, and they're very sensitive to temperatures.
    – Gwendolyn
    Mar 18, 2019 at 19:08
  • temperatures were 85 on the warm side and 75 on the cool side. he died on the warm side but showed no signs of burns. he also didn’t look like he had an RI or anything.
    – Maddie M
    Mar 19, 2019 at 12:52

2 Answers 2


I'm sorry to hear about your snake.

  1. It is possible that the evergreen branch still posed a threat. I work as a reptile keeper in a zoo, and we as a rule will not use any evergreen regardless of its age. It's also possible that the branch had been contaminated by chemicals, especially if it came from a farm area.

  2. Other possibilities: Lack of adequate temperature gradient (ball pythons can be quite sensitive in my experience), impaction from substrate ingestion, difficulties shedding, food poisoning or illness.

  3. As I'm sure you are aware, another possibility is that your python simply had a genetic defect which you could not have known about. These are sadly quite common in mass bred snakes.

If you are able to, your best option is to ask a vet to perform a necropsy for a small fee. You aren't guaranteed an answer, but you will be able to conclusively rule out several possibilities.

  • Nice answer! From my personal experience, if reason 2 were the problem, I'd have expected the ball python to have gone off feed.
    – JAD
    Mar 19, 2019 at 9:35
  • Thanks! I agree - Just wanted to make sure all bases were covered. Mar 19, 2019 at 10:50

First, sorry about your snake. I tend to agree with Chameleonbones, but I'm going to expand a bit.

It sounds like the most likely cause was evergreen branch, though I am surprised it happened so quickly. That seems to be the biggest change/unknown and the timing is a little much to be just coincidence (though of course there could still be unknowns like genetic defects, food poisoning, etc.).

You said "evergreen" and though this could be a several different types of trees, one of the most common types is Pine. Pine and Cedar (and probably others that are closely related) have oils that can be very toxic to snakes and should not be used in the enclosure. Even if you were to use Pine to build a tank, you would need to seal/paint the wood to ensure the animal could not come into contact with these oils.

Because the potential risk is so high, I would recommend never using any type of evergreen anything in a reptile enclosure. If you want to provide your snake some things to climb on, please either purchase branches/decorations from a proper vendor, or buy some PVC and make your own. I know paying $15+ for a stick can seem ridiculous, but introducing so many unknowns and possible dangers to your pet just isn't worth it.

  • the branch was washed multiple times very thoroughly before putting it in his cage. he’d climbed on it before and had no problems.
    – Maddie M
    Mar 21, 2019 at 3:25
  • @MaddieM lacking any other clear cause, it's still very much possible that the branch is the problem. The oils that are toxic are also inside the branch, so washing the outside might not be enough.
    – JAD
    Mar 21, 2019 at 16:48

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