It starts on Goat and today’s date so you can see it working — change either one and the answer updates as you type. There is nothing to submit.

Due
—
Every species, and how long it takes
Animal or eggAverageNormal spread
Livestock
Goat150 days±5 days
Sheep147 days±4 days
Cow283 days±5 days
Pig114 days±2 days
Horse340 days±15 days
Donkey365 days±15 days
Alpaca or llama340 days±15 days
Water buffalo310 days±10 days
Yak260 days±10 days
Bison285 days±10 days
Farmed deer or elk240 days±10 days
Llama350 days±15 days
Camel395 days±15 days
Reindeer225 days±8 days
Small stock
Rabbit31 days±2 days
Chinchilla111 days±7 days
Guinea pig68 days±5 days
Dog63 days±3 days
Cat64 days±3 days
Ferret42 days±2 days
Rat22 days±1 days
Mouse20 days±1 days
Hamster16 days±1 days
Gerbil25 days±2 days
Incubation
Chicken eggs21 days±1 days
Duck eggs28 days±1 days
Goose eggs30 days±2 days
Turkey eggs28 days±1 days
Quail eggs17 days±1 days
Guinea fowl eggs28 days±1 days
Pigeon or dove eggs18 days±1 days
Pheasant eggs24 days±1 days
Peafowl eggs28 days±2 days
Ostrich eggs42 days±3 days
Emu eggs52 days±4 days
Rhea eggs38 days±3 days
Muscovy duck eggs35 days±1 days
Swan eggs35 days±2 days
Partridge or chukar eggs23 days±1 days
Reptiles
Ball python eggs57 days±4 days
Corn snake or kingsnake eggs60 days±5 days
Boa constrictor112 days±10 days
Bearded dragon eggs60 days±8 days
Leopard gecko eggs50 days±12 days
Crested gecko eggs65 days±10 days
Tortoise eggs80 days±25 days
Water turtle eggs65 days±10 days
Iguana eggs90 days±15 days
Uromastyx eggs75 days±10 days
Chameleon eggs210 days±60 days
Monitor or tegu eggs165 days±30 days
Hognose eggs55 days±5 days
Blue tongue skink100 days±15 days
Garter snake90 days±15 days
Amphibians
Axolotl eggs17 days±4 days
Dart frog eggs to tadpole14 days±4 days
Bullfrog tadpole to frog365 days±120 days
Fish
Tilapia — fry free-swimming14 days±3 days
Trout eggs30 days±7 days
Channel catfish eggs7 days±2 days
Koi or goldfish eggs5 days±2 days
Bass or bluegill eggs4 days±2 days
Sturgeon eggs7 days±2 days
Crayfish eggs21 days±7 days
Freshwater prawn larvae30 days±7 days
Invertebrates
Composting worm cocoons21 days±7 days
Cricket eggs11 days±3 days
Mealworms — eggs to harvest70 days±21 days
Black soldier fly — eggs to harvest18 days±5 days
Silkworms — hatch to spinning27 days±4 days
Silkworm cocoons — to moth14 days±3 days
Praying mantis egg case35 days±12 days
Tarantula egg sac50 days±14 days
Snail eggs18 days±7 days
Stick insect eggs120 days±60 days
Butterfly egg to adult30 days±10 days
Jumping spider egg sac25 days±7 days
Scorpion240 days±45 days

These are planning figures. Real gestation varies with breed, age and condition, and incubation moves with temperature and humidity — they mark a calendar, they do not replace a vet. I built this because I kept losing track of my own dates; HomePlot keeps them against the actual animal, with the rest of the record. Free, in a browser, works with no signal.

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