Worm, help ID

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Update, I was getting ready to clean Paxton's water dish, and when I lifted it up...there was a big fat earthworm hiding underneath it. Paxton saw it, and ate it before I could even get the dish completly out of the enclosure. LOL
At least it wasn't a spider

 

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I took a stool sample to the vet. Better to be safe than sorry. Paxton is negative for worms. Yay! It was an earthworm in his enclosure.