is tharju, a female tiger?

Most likely. There was an official art from the author where the couple had their child playing along with Tharju’s babies. Though it could still be implied that Tharju might be the dad (not really sure). Can’t find that post now, sadly.

i saw the raw and tharju will pair with that black tiger who attack ilya, i cant read french tho so i dont know which one got pregnant but that black tiger was way bigger than tharju

aahh then Tharju might really be a female