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Gestation Calculators

Track pregnancy timelines and never miss a due date.

  1. Alpaca

    Alpaca
  2. Cat

    Cat
  3. Cattle

    Cattle
  4. Dog

    Dog
  5. Donkey

    Donkey
  6. Ferret

    Ferret
  7. Gerbil

    Gerbil
  8. Goat

    Goat
  9. Guinea Pig

    Guinea Pig
  10. Hamster

    Hamster
  11. Horse

    Horse
  12. Llama

    Llama
  13. Mouse

    Mouse
  14. Pig

    Pig
  15. Pony

    Pony
  16. Rabbit

    Rabbit
  17. Rat

    Rat
  18. Highland Cattle

    Highland Cattle
  19. Sheep

    Sheep

The averages and windows below are the ones each calculator uses.

Gestation length by species
SpeciesAverage (days)Calculator window (days)
Hamster 16 15 to 22
Mouse 20 19 to 21
Rat 22 21 to 23
Gerbil 24 24 to 26
Rabbit 31 28 to 33
Ferret 42 39 to 42
Dog 63 58 to 72
Cat 65 63 to 67
Guinea Pig 68 59 to 72
Pig 114 112 to 118
Sheep 147 144 to 152
Goat 150 145 to 155
Highland Cattle 280 275 to 285
Cattle 283 275 to 290
Pony 330 320 to 360
Horse 340 320 to 370
Alpaca 345 335 to 350
Llama 345 335 to 355
Donkey 365 355 to 370