When do ferrets stop growing? if they were really born when it says they were, they are 4 months and 14 days old today.
i vary the sizes and they are eating them all. The sizes vary from, the size of my thumbnail, to about the size of the lower portion of my thumb (From tip to first joint knuckle.) If you can imagine that
That's fantastic that they're eating bone! Was is crushed/smashed up or whole?
In regards to their growth, are they mill ferrets? The level of eating and growth usually slows down around 4-5 months, although intact ferrets that haven't been spayed/neutered will keep filling out until about 18 months.
If you get a chance, I'd like you to post a weekly menu of exactly what you're currently feeding.