A dog tail is a bone. You can cut a bone out of a dog’s tail, but it is very unlikely that you would be able to cut out a dog’s tail from its body.
It’s probably best if you don’t cut out a dog’s tail unless you have a very close one. Dogs often have short tails that are so short that you have to pull your fingers through them to open them. You can cut out a dog’s tail, but you’ll probably end up scraping off the skin next to the bone. You can also cut out a dog’s body bone, but that’s the most painful way to do it.