Children playing at dressing up is one thing. Tweens and teenagers "identifying" as a "thereotype" is quite another and, I would suggest, quite damaging.
The below is a direct quote from a poster on another thread. Read it and then decide if you need to be keeping a closer eye on your children's furry fun...
"therianthropy is not a phase and can not be 'grown out of'. We don't choose it and we can't get rid of it, even if you wanted to. Being a therian isn't about acting like an animal as play, though most do quadrobics as a fun activity that makes them feel more animal-like.
Therianthropy is when you identify as one, as many therians experience memories from their past lives as animals. On every level except physical, therians identify as their thereotypes and can relate to the animalistic behaviour of them. We do quadrobics on all fours to feel morre connected to our thereotypes, with mine being Northern Rocky Mountain Wolf, Scottish Fold, Cross Fox and Dragon. (Yes, you can have multiple thereotypes.)
Being a therian isn't created by the internet, you are born with therianthropy, but seeing videos on platforms such as YouTube and TikTok might encourage you you're not alone in how you're feeling, that there are others just like you, and you don't feel so scared anymore.
Therianthropy is also NOT from any TV shows, it is REAL LIFE, not just made up. It is us. We are it. Just like you could be autistic (which I am) or dyslexic, you are born with it and it's not inspired by anything other than our inner souls.
But one thing I ask you, if your child comes out to you saying they're a therian or anything that is considered 'weird' by some of the community-whether they're a furry or quadrobist or in the LGBTQ+ community (which I myself am), please support them. It means so much to them if you support them, that they don't have to hide anything from you, that they feel safe, that they can be themselves and be free around you instead of trapped by those unspoken rules that make up 'the norm', and even if you try to beat it out of them, it's not going to work."