Ever heard of 'You're what you eat'? Well that goes the same on rabbit, they're what they eat. It's a common belief that the only things rabbit eat is pellets. Where does this myth came from? People give rabbits pellets because it's cheap, ease of feeding and rapid weight gain for the sake of livestock market, where rabbits are raised only for their meat or fur.
The fact is feeding a rabbit with pellet for the whole of their lives only contribute to obesity, chronic soft stools, overproduction of waste, urine sludge, and other calcium related health issues. It's not their choice to eat what they want, instead the owner is responsible to give them a healthy diet which leads to healthy life. If rabbits can talk I'm sure they'll say "Boss, I need something else to eat, not just pellets." or worse "Give me other food or else I'll run away from this house!"
The food pyramid for rabbit goes like this.
They need a lot of hay for their digestive system, and the least for treats.
For human, this is our food pyramid. It's an excellent tool to help you make a healthy food choices.
P.S. I'm still figuring on how to increase a body weight. My friends were shocked to see me become thinner after 5 months didn't met. Well I don't know which side I'm thin because my body weight is still maintain since I left the university, which is 56 kg and height 1.76. I'm underweight! Actually I don't really care about it. Become thin means you can eat what you want.