Thanks Crittermom, good to know. I'll just give as a treat then. At the moment I'm using papaya as a staple because he's happy to eat a ton of it and it's 4.8:1
It's also abundant, cheap and keeps well in the fridge. Phew.
I've been crushing calcium tablets this week and rolling his treats in it and I must say he started looking better immediately - his fur thickened up and got glossier. If possible he's even lovelier to cuddle!!