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Rabbit Gestation Calculator
Rabbit pregnancy uses 31 days here. The 28 to 33 day display starts at nest-box time, while Merck gives about 31 to 33 days for kindling. Enter the mating date.
Rabbit gestation at a glance
| Average used by this calculator | 31 days (about 4.4 weeks) |
|---|---|
| Window shown by this calculator | 28 to 33 days after breeding |
| Due date formula | Breeding date + 31 days |
| Birth is called | Kindling |
| Mother | Doe |
| Newborn | Kit |
| Reported litter size | 4 to 12 in Merck laboratory data; its rabbit management chapter notes 12 to 15 for many medium-sized does |
Merck says does may have longer gestations with small litters, so the result is a planning date rather than a guarantee.
Rabbit pregnancy and kindling timeline
| After mating | Rabbits ovulate in response to mating. |
|---|---|
| About day 12 | A veterinarian can palpate for pregnancy at this time. |
| Days 28 to 29 | Merck recommends adding a nest box. |
| 1 to 2 days before birth | A doe may pull fur and build a nest. |
| Day 32 if no kindling | Contact a rabbit veterinarian promptly; Merck discusses veterinary induction at this point. |
Frequently asked questions
How long is a rabbit pregnant?
The rabbit calculator uses 31 days after mating; its Kindling Preparation Window begins at day 28 for nest-box planning, while Merck's rabbit management chapter gives about 31 to 33 days for kindling.
How do I calculate a rabbit kindling date?
Enter the mating date and the rabbit calculator adds 31 days for an estimated kindling date; the displayed 28 to 33 day Kindling Preparation Window begins with nest-box preparation.
When should I put in a rabbit nest box?
Merck recommends adding a nest box 28 to 29 days after breeding, and a doe may pull fur a day or two before kindling.
When should I call a veterinarian if a rabbit has not kindled?
If a doe has not kindled by day 32, contact a rabbit veterinarian promptly. Merck discusses veterinary induction at that point because a litter delivered after day 34 is almost always dead.
Sources
- Merck Veterinary Manual: Management of Rabbits
- Merck Veterinary Manual: Select Physiological Data for Laboratory Animals
Reviewed by Elliott Garber, DVM · Last reviewed
