What gender do you think: Butterfree, Pidgeott, Bulbasaur, Charizard, Squirtle, Kingler, Primape, Muk, Mr. Mime, Lapras, Snorlax, Heracross, Quilava, Totodile, Noctowl, Donphan, Swellow, Sceptile, Torkoal, Glalie, Staraptor, Torterra, Infernape, Gilscor, Boldore, Greninja, Talonflame, Goodra, Rowlet, Lycanroc, Incineroar, Dragonite, Gengar, Lucario, and Farfetch'd are and why if you think of why then you don’t have to state a reason if you’re not sure.
Tauros, Buizel, Gible, Oshawott, Tepig, Scraggy, Leavanny, Palpitoad, Krookodile, Hawlucha, and Noivern are male. Bayleef, Unfezant, and Snivy are female.
Bulbasuar, Charizard, Squirtle, Totodile, Sceptile, Glalie, Greninja, and Rowlet are implied to male in the english dub but that’s not canon as they were never mentioned in the japanese version.