Quote Originally Posted by KMG View Post
I can say that my Ball did not show a difference when I added the UV light. She's the same snake that she was before.
UVA and UVB are different--not sure which one you mean when you say "UV." UVB is the one that mimics natural sunlight and is completely different from UVA. If you give only UVA to a species that needs UVB to metabolize vitamin D, like some lizards, they will get metabolic bone disease.

UVB will appear different to a snake than UVA. They will be able to see the UVB as a basking opportunity and distinguish it from regular light. Otherwise, they would bask under just any lights, and they don't.

I think I saw a video Lori Torrini did where she said her ball pythons did bask (I'm pretty sure she uses UVB) but did say they do it less frequently even when compared to other pythons specifically, so, it's up to you if you want to add it. It can be done and it does allow your snake to do more enriching behaviors; it's your choice if you think your snake "deserves" it or not.