How many egg groups are there in Pokémon Orange?

There are 15 egg groups: Monster, Amphibian, Fish, Invertebrate, Insect, Avian, Field, Fairy, Grass, Human-Like, Inanimate, Amorphous, Reptile, Ladies Man, No Eggs.

How do egg groups work in Pokémon breeding?

Two Pokémon can breed if they share at least one egg group and are opposite genders (or one is Ditto). The offspring will be the same species as the mother (or the non-Ditto parent when breeding with Ditto).

PolishedDex

Egg Groupsin Pokémon Orange

Egg groups determine which Pokémon can breed together in Pokémon Orange. Two Pokémon can produce an egg if they share at least one egg group. Click on any group to see all compatible Pokémon.

Monster

Large, powerful Pokémon including starters and the Nidoran lines — 33 Pokémon

Amphibian

Amphibious Pokémon that live near water — 31 Pokémon

Fish

Fish-like Pokémon that live primarily in water — 17 Pokémon

Invertebrate

Invertebrate aquatic Pokémon like shellfish — 15 Pokémon

Insect

Insect and arachnid Pokémon — 19 Pokémon

Avian

Bird-like Pokémon and other flyers — 19 Pokémon

Field

Land-based mammals and quadrupeds — 55 Pokémon

Fairy

Cute, mystical Pokémon with magical properties — 17 Pokémon

Grass

Plant-based Pokémon and fungi — 22 Pokémon

Human-Like

Bipedal Pokémon with humanoid forms — 18 Pokémon

Inanimate

Inorganic Pokémon — this game’s Mineral group — 13 Pokémon

Amorphous

Gaseous, gelatinous, or shapeless Pokémon — 14 Pokémon

Reptile

Draconic and reptilian Pokémon — this game’s Dragon group — 18 Pokémon

Ladies Man

Special group — breeds with almost anything — 1 Pokémon

No Eggs

Pokémon that cannot breed at all — 27 Pokémon

Breeding Basics

Breeding Bridges

Pokémon in multiple egg groups act as "bridges" for transferring egg moves between groups. In Pokémon Orange, Bulbasaur belongs to both the Monster and Grass groups, allowing egg moves to transfer between them.

Special Cases

Ditto can breed with any Pokémon except those that cannot breed at all
Undiscovered Pokémon (babies, legendaries) cannot breed at all
Genderless Pokémon can only breed with Ditto

Frequently Asked Questions

How many egg groups are there in Pokémon Orange?: There are 15 egg groups: Monster, Amphibian, Fish, Invertebrate, Insect, Avian, Field, Fairy, Grass, Human-Like, Inanimate, Amorphous, Reptile, Ladies Man, No Eggs.
How do egg groups work in Pokémon breeding?: Two Pokémon can breed if they share at least one egg group and are opposite genders (or one is Ditto). The offspring will be the same species as the mother (or the non-Ditto parent when breeding with Ditto).