From the show’s lore, beastmen are:

1. Effectively immortal, they stay young forever.
2. At least twice as strong and agile as normie humans on average.
3. Can have children with humans, children are always beastmen.
4. Have built-in poison resistance, since neither Yani Neko nor Aru Neko are dead yet from organ failure.
5. A whole lot of humans have beastmen kink.

And they are heavily discrimonated against, and are not allowed to work skilled jobs.