What are cecotropes and why is my rabbit leaving them uneaten?

Cecotropes are soft, grape-cluster droppings that healthy rabbits eat directly from their anus as a critical nutritional source — finding them uneaten in the litter box consistently signals a health or diet problem that needs investigation.

Cecotropes (also called cecotrophs or "night feces") are a completely normal and vital part of rabbit nutrition. They are not a sign of digestive problems — but leaving them uneaten consistently is.

What cecotropes are
Produced in the cecum (a large fermentation chamber), cecotropes contain high concentrations of protein, B vitamins, volatile fatty acids, and beneficial bacteria. Rabbits ingest them directly from their anus, typically in the early morning hours when humans are not watching.

Cecotropes vs. normal fecal pellets
- Cecotropes: soft, dark, clustered in a grape-like bunch, strong smell, coated in mucus
- Normal pellets: dry, round, fibrous, odorless, separate pieces

Top 7 reasons cecotropes are left uneaten
1. Overfeeding pellets or treats: rabbit is not hungry enough to seek cecotropes
2. Obesity: rabbit physically cannot reach its hindquarters to consume them
3. Arthritis or back pain: painful to adopt the necessary posture
4. Dental pain: eating cecotropes requires effort that hurts
5. Cecal dysbiosis: overproduction makes them too abundant to consume fully
6. Diet too high in carbohydrates: alters cecal fermentation and cecotrope consistency
7. Stress or pain: general illness suppresses the behavior

Diet correction
Unlimited timothy or meadow hay should comprise 80–85% of diet. Reduce or eliminate pellets if uneaten cecotropes coincide with pellet feeding. Remove fruit and sugary treats entirely.

When uneaten cecotropes signal urgent vet visit
If cecotropes are excessively liquid, foul-smelling, or accompanied by weight loss and lethargy, cecal dysbiosis or an underlying illness may require diagnostic testing.

Use Flovvi's daily observation log to note cecotrope consumption patterns. It's one of the simplest yet most revealing health metrics for rabbit owners.