My bearded dragon Goatee has this weird kink in the end of his tale. I'm not sure if it is a birth defect or if he has an infection, sorry that the photos are behind a link. My uploader won't work
https://photos.app.goo.gl/B3bEkJpKYARGcpBT2
https://photos.app.goo.gl/B3bEkJpKYARGcpBT2