Not enough info to be conclusive about IBD. What you are describing could be from a whack on the head while striking, perhaps injured while coiling and hitting something just right.

I can say that if it is IBD and both are infected, the python will show a much more rapid onset of outward symptoms, probably neuro in nature. ie stargazing, or twisted corkscrew movement. Boa can remain Asymptomatic for a long time, or show mild symptoms for a long time.

If you suspect it, you will need some biopsy tests done in order to test for it. It's not gonna be cheap if they do it right. But it will take a qualified herp vet. Samples should be taken from several internal organs for more accurate results.
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Richard Carew
Sunset BCI
You laugh at me cuz I'm different! I laugh at you cuz you're all the same.
Stop Inhumane and Illegal Practices

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