The Complete Rabbit Nutrition Plan: What to Feed Your Adult Bunny for Optimal Health

If you’ve ever watched your rabbit nibble a carrot and then stare at you with those big, hopeful eyes, you know the pressure to get the diet right. A good diet isn’t just about a happy tummy – it keeps teeth healthy, fur shiny, and helps your bunny live a long, bouncy life. Let’s break down a simple, everyday plan that works for most adult rabbits.

Why Nutrition Matters

Rabbits are herbivores, which means their bodies are built to chew fiber all day long. Without enough fiber, they can get gut problems, dental issues, and even mood swings (yes, bunnies can be grumpy!). A balanced diet also supports their immune system, so they’re less likely to catch common bugs like snuffles.

The Core of a Healthy Diet

Think of a rabbit’s diet as a three‑part pie:

Unlimited hay – the foundation.
Fresh greens – the daily vitamins.
Limited pellets – the extra calories.

Anything else is a treat, not a staple.

Unlimited Hay: The Backbone

Hay should be available 24/7. It’s the main source of fiber that keeps the digestive tract moving and the teeth wearing down at a healthy rate. Here’s what to look for:

Timothy hay – the gold standard for adult rabbits. Choose a mix of longer stems (for chewing) and shorter bits (for easy eating).
Orchard grass or meadow hay – good alternatives if your bunny prefers a softer bite.
Avoid alfalfa – it’s high in protein and calcium, which adult rabbits don’t need in large amounts.

A quick tip from my own bunny, Thistle: I once left the hay bucket on a high shelf and watched him hop up, pull it down, and make a mess. Now the hay lives on the floor where he can graze whenever he likes.

Fresh Greens: The Daily Must

Fresh leafy greens are the vitamin and mineral boost every rabbit needs. Aim for about one cup of greens per 2 pounds of body weight each day. Rotate the varieties to keep things interesting and to cover a broader nutrient range.

Good choices

Romaine lettuce (avoid iceberg – it’s mostly water)
Kale (in small amounts, it’s high in calcium)
Basil, cilantro, parsley, dill
Dandelion leaves (wild‑grown is best, but wash well)
Spinach (limit to a few times a week; high oxalates)

What to skip

Iceberg lettuce – low nutrition, can cause diarrhea.
Cabbage, broccoli, and cauliflower – can cause gas.
Any wilted or moldy greens – always toss them.

Wash all greens under cool water, pat dry, and chop into bite‑size pieces. My rabbit, Luna, loves a mix of kale and basil; she’ll hop over to the kitchen whenever I’m prepping a salad.

Pellets: Choose Wisely

Pellets are a convenient source of calories, protein, and some vitamins, but they should be a small part of the diet. Look for:

Plain, high‑fiber pellets – at least 18% fiber, no added seeds or dried fruit.
No added sugars or artificial colors – keep it natural.

A typical adult rabbit (about 5 pounds) needs roughly ¼ cup of pellets per day, split into two feedings. Too many pellets can lead to obesity and digestive upset, so measure carefully.

Treats: Keep Them Small

Treats are fun, but they’re also the easiest way to tip the diet off balance. Stick to the “one‑inch rule”: a treat no larger than the tip of your thumb per day.

Safe treat ideas

Small pieces of apple (no seeds)
Carrot tops (the leafy part, not the root)
A few berries – raspberries, blueberries, strawberries
Commercial rabbit treats that list hay or Timothy as the first ingredient

Avoid anything sugary, salty, or processed. My bunny, Peanut, once got a piece of chocolate left on the counter – I learned the hard way that chocolate is toxic to rabbits. He’s fine now, but I keep a strict “no chocolate” rule in the kitchen.

Putting It All Together: A Sample Day

Morning

Fresh water – changed daily.
Unlimited hay in a low box.
¼ cup of high‑fiber pellets.
A handful of mixed greens (e.g., romaine, basil, dandelion).

Mid‑day

Check water and hay levels.
Offer a small treat if you’re doing a training session.

Evening

Refill hay if needed.
Another small portion of fresh greens.
If your rabbit tends to overeat pellets, you can skip the evening pellet serving and give a few extra greens instead.

Common Mistakes and How to Fix Them

Mistake	Why It’s Bad	Quick Fix
Feeding only pellets	Low fiber, high calories	Add more hay, cut pellet amount in half
Giving iceberg lettuce	No nutrients, can cause diarrhea	Swap for romaine or mixed greens
Skipping daily hay change	Hay can get dusty, lose flavor	Refresh hay daily, keep a spare bucket
Over‑treating with fruit	Sugar spikes, weight gain	Limit fruit to once or twice a week, tiny pieces

Listening to Your Bunny

Every rabbit is a little different. Watch for signs:

Good signs – Soft, round droppings; bright eyes; active hopping.
Warning signs – Hard, dry droppings; loss of appetite; teeth that look too long.

If you notice anything off, adjust the diet slowly and consider a vet check. I once saw my rabbit, Basil, stop eating his hay for a day. A quick look at his teeth showed a small overgrowth. A short trim at the vet solved it, and his appetite returned the next morning.

Final Thoughts

Feeding an adult rabbit isn’t rocket science, but it does need a bit of daily attention. Keep hay plentiful, rotate fresh greens, limit pellets, and treat sparingly. With a steady routine, you’ll see a healthier, happier bunny who loves to hop around your home.