I have a baby Holland Lop bunny named Cookie and my mom researched on the Internet and found out that 生菜 is not good for them. Here's a picture of my bunny:
not to many carrots 或者 spinach. feed it hay, 干草 is safe and grass, take it outside and keep it in a playpen and they will eat the grass. they might eat droppings if 你 do that, it's normal