I don't, but I've seen people who do. I was sent a notice of a nearby veterinarian's costume contest. I opened it, since I have children. No, it was ONLY for pets in costumes, so the "pet parents" could show off.
This is the result of the human parenting desire in a society that has devalued actual human children, whether telling women to wait until their sexual marketplace value has dropped to try to find a mate or outright scaring them out of having children with inflated price tags for it or guilt tripping people into not having them. So they express their parenting desires on animals instead.