I am using raisins to train my 7 month old bun, Zeke. I just started about a week ago and he gets usually 2/day sometimes 4. Zeke is a not yet 4 pound mini rex buck.
I read raisins were a good treat food. I just got a text from my hubby, someone was warning him that raisins have too much iron and are therefore bad for rabbits.
I cannot find any research to support that raisins are bad for rabbits…. does anyone have any wisdom for me? He is very food motivated and will do anything for a raisin. LOL. If raisins are bad what dried fruit do you think would work better for training? I like dried so I can keep in in a cup by me for instant positive reinforcement.
Zeke’s diet:
I divide this into two daily portions as it helps me get him into his cage in morning before I leave before classes and at bedtime 
1/3 cup Oxbow bunny essentials pellets
2 slices of apple (thickness of a coin/quarter)
2 packed cups of leafy greens and herbs
Unlimited Oxbow hay (I rotate Timothy, Orchard grass and Botanical)