My BP is always out

[200xth]

I'm gonna see if I can go to pet smart soon and see what rats he can eat. I have pics of him from like a week or two ago. He is 4 months old in a few days. What do you think he should be able to eat? Gonna add the pics after I get out of school because internet is slow.

If he's 4 months old he almost definitely needs something bigger than mice hoppers.

Best thing to do is weigh him, feed him something around 10% to 15% of his bodyweight.

If you can't weigh him (no scale), eyeball him and get him something about the same size as the widest part of his body.

Depending on how big/small he is for his age, I would imagine he could be on rat pups easily enough by now. If they don't have rat pups you can substitute adult mice.

How often are you feeding him?