Chess openings named after animals

Accelerated Dragon of the Sicilian Defence 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6
Black Mustang Defense 1.Nf3 Nc6
Bullfrog Gambit 1.d4 Nf6 2.g4
Canard Opening 1.d4 Nf6 2.f4
Clam Variation 1.e4 e5 2.d3
Cobra Variation of the Sicilian Defence 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Ndb5 Bc5
Crab Opening 1.a4 e5 2.h4
Dragon Variation of the Sicilian Defence 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6
Elephant Gambit 1.e4 e5 2.Nf3 d5
English Orangutan 1.c4 Nf6 2.b4
English Rat 1.d4 d6 2.c4 e5
Fried Fox Variation 1.e4 f6 2.d4 Kf7
Frisky Knight Variation of the Bird's Opening 1.f4 d5 2.Nf3 Nf6 3.Ne5
Giraffe Attack of the Vienna Game 1.e4 e5 2.Nc3 Bc5 3.Qg4
Great Snake 1.c4 g6
Halibut Gambit 1.c4 b5
Hawk Defense 1.d4 c5 2.d5 Nf6 3.Nf3 c4
Hedgehog a pawn formation adopted usually by Black that can arise from several openings
Hippopotamus Defence a name for various chess opening systems in which Black moves a number of his pawns to the third rank (usually a6, b6, d6, e6, g6, h6)
Horsefly Defense the Bird's Opening 1.f4 Nh6
Kangaroo Defense 1.d4 e6 2.c4 Bb4+
Kingfisher Gambit of the Dutch Defense 1.d4 f5 2.Nc3 d5 3.e4
Lion Claw Gambit of the Pirc Defense 1.e4 d6 2.d4 Nf6 3.Nc3 Nbd7 4.f4 e5 5.Nf3 exd4 6.Qxd4 c6 7.Bc4 d5
Lizard Defense 1.d4 g6 2.h4 Nf6 3.h5
Lobster Gambit of the Latvian Gambit 1.e4 e5 2.Nf3 f5 3.g4
Mad Dog Attack of the Blackmar-Diemer Gambit 1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 g6 6.Bc4 Bg7 7.h4
Medusa Gambit 1.d4 Nf6 2.c4 g5
Monkey's Bum of the Modern Defense 1.e4 g6 2.Bc4 Bg7 3.Qf3 e6 4.d4 Bxd4 5.Ne2 Bg7 6.Nbc3
Mosquito Gambit of the Englund Gambit 1.d4 e5 2.dxe5 Qh4
Orangutan Opening 1.b4
Penguin Variation of the Réti Opening 1.Nf3 d5 2.c4 d4 3.Rg1
Porcupine Variation 1.c4 f5 2.e4 fxe4 3.Nc3 Nf6 4.g4
Pterodactyl Defense 1.d4 d6 2.c4 g6 3.Nc3 Bg7 4.e4 c5 5.Nf3 Qa5+
Raptor Attack of the Trompowsky Attack 1.d4 Nf6 2.Bg5 Ne4 3.h4
Rat Defence 1.d4 d6
Scorpion-Horus Gambit of the Caro-Kann Defence 1.e4 c6 2.Nc3 d5 3.d3 dxe4 4.Bg5
Sicilian Pterodactyl 1.e4 g6 2.Nf3 Bg7 3.d4 c5
Snail Variation of the Old Benoni Defense 1.d4 c5 2.d5 Na6
Snake Variation of the Benoni Defense 1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 Bd6
Tortoise Opening 1.e4 e5 2.Bd3
Vulture Defense 1.d4 c5 2.d5 Nf6 3.c4 Ne4
Wasp Variation of the Elephant Gambit 1.e4 e5 2.Nf3 d5 3.Nxe5 dxe4 4.Bc4 Qg5
Whale Opening 1.e4 e5 2.c4
Wild Bull Defense 1.e4 Nh6
Wolf Gambit of the French Defence 1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.Nge2