I've decided to try my hand at breeding my own feeders however the two males that I got seem to be a little thin? I'm not really certain of how their weight should really feel/look like and they appear otherwise healthy, they're round on the tummy and don't look sick, but I can easily feel their spines and hip bones when I hold them and their leg muscles also feel a bit... I don't know, I guess I would describe it as stringy. Stringier than I think they should be.

Here's some pictures. They do look healthy, right?

Sorry about the blurriness, the first fellow is super flighty.



Also, I'm wondering what the recipe is for making mostly solid coloured rats. I have a snake who only takes solid blacks/browns and I would like to get my breeders to accommodate that as much as possible.

Thanks!