The hay/ forage i get comes in bale sizes rather than weight and i’ve never bothered to weigh it to be honest. i don’t know about rabbit lbs either- mine are weighed in kilos! Lollo was 2kg of pure muscle when he had the snip but prob slightly more now. he eats about 3-4 large fistfuls a day (mix of dried forage and timothy hay, sometimes alfafa too). Chino was just shy of 1kg a few weeks ago but has grown so poss just over that now. She has 2 large handfuls a day of the same but more alfafa too. I don’t know Blue’s weight as the vet checked her over at the rescue didn’t pass that info on and also she has lost a bit of weight due to me putting her on sensible food in sensible quantities. i would guess around 3kg though. She really doesnt approve of hay, she thinks its a waste of time. she only tends to eat it if i either feed it to her strand by strand as if it were a treat, or if i withdraw all other food until she has had some- even then she’ll have maybe half a handful tops and then just won’t eat (and also when she’s had enough hay she pees on it….).