Most cactus needles have a toxin that contributes to the pain. The tips of the needles have a little hook to them that keeps the from falling out, so you have some tissue injury, toxin, and the likelihood of bacteria being 'injected' into each puncture.

If your pet encounters a cactus it's important to have proper tools handy to safely remove the quills or recognize when you'll need veterinary assistance.

In severe cases, it is safer and easier for a veterinarian to remove these from your pets when they are under anesthesia. This is especially true for cats and for any spines near the face. Removing Cholla Spines. Cholla (pronounced ˈchȯi-yə) is from the Cylindropuntia family. This is one of the most common species of cacti in Arizona.

Discover expert advice on what happens if your cat swallows cactus needles, including symptoms, removal tips, and more. Learn about cholla cactus spines and how to handle such situations.

I have some horrible dermatitis on my hands from getting stuck by the infamous jumping cholla. I have several in my collection and while re-potting another cactus I brushed my knuckles up against one of them.