Fantasy dildo’s do fall under Chaturbates ToS of beastiality and therefore NOT allowed.

Maximum size of a toy is:

Your toy may not be bigger than 12 inches or wider than a soda can, and must be an actual sex toy NOT a soda can 😉

https://blog.chaturbate.com/news-and-announcements/overly-large-sextoys/

For certain toys, you would need to take a photograph of the toy you wish to use and email support@chaturbate.com to confirm if you are allowed to use it.

Please be aware that even though Support can say that you are allowed, this can change from day to day due to management.