What’s wrong with having a furry mascot exactly? I mean the Japanese Air force had a furry mascot for one of their bases, not only is he a furry but also a femboy. His name is Omaneko (おまねこ)

An even better source for calcium is, believe it or not, bones. They have way more calcium than leafy vegetables, and for us carnivores they’re definitely the better option because most of us can’t fully digest plants, and thus don’t get any benefit from them besides fiber. Not sure if that’ll benefit him though, might be harder for him to get the calcium into his bones no matter where he gets it from.