Here is a list of different animals that start with the letter M.

Macaque

Macaroni Penguin

Macaw

MacGillivray’s Warbler

Machaeroides

Mackenzie Valley Wolf

Macrauchenia

Madagascar Hissing Cockroach

Madagascar Jacana

Madagascar Tree Boa

Madora Moth

Magellanic Penguin

Maggot

Magnolia Warbler

Magpie

Magyarosaurus

Mahi Mahi (Dolphin Fish)

Maiasaura

Maine Coon

Mal Shi

Malayan Civet

Malayan Krait

Malayan Tiger

Malchi

Mallard

Malteagle

Maltese

Maltese Mix

Maltese Shih Tzu

Maltipom

Maltipoo

Mamba

Mamushi Snake

Man of War Jellyfish

Manatee

Manchester Terrier

Mandarin Rat Snake

Mandrill

Maned Wolf

Mangrove Snake

Mangrove Snapper

Manta Ray

Mantella Frog

Marabou Stork

Marans Chicken

Marble Fox

Maremma Sheepdog

Margay

Marine Iguana

Marine Toad

Markhor

Marmoset

Marmot

Marsh Frog

Marsican Brown Bear

Masiakasaurus

Masked Angelfish

Masked Palm Civet

Mason Bee

Massasauga

Mastador

Mastiff

Mastiff Mix

Mauzer

May Beetle

Mayan Cichlid

Mayfly

Meagle

Mealworm Beetle

Mealybug

Meerkat

Megalania

Megalochelys

Megalodon

Megamouth Shark

Meganeura

Megatherium

Meiolania

Mekong Giant Catfish

Merganser

Mexican Alligator Lizard

Mexican Black Kingsnake

Mexican Eagle (Northern crested caracara)

Mexican Fireleg Tarantula

Mexican Free-Tailed Bat

Mexican Mole Lizard

Microraptor

Midget Faded Rattlesnake

Miki

Milk Snake

Milkfish

Milkweed aphids

Millipede

Mini Labradoodle

Mini Lop

Miniature Bull Terrier

Miniature Husky

Miniature Pinscher

Mink

Minke Whale

Mississippi Kite

Moccasin Snake

Mockingbird

Modern Game Chicken

Mojarra

Mojave Ball Python

Mojave Rattlesnake

Mola mola (Ocean Sunfish)

Mole

Mole Crab (Sand Flea)

Mole Cricket

Mole Snake

Mollusk

Molly

Monarch Butterfly

Mongoose

Mongrel

Monitor Lizard

Monkey

Monkfish

Monocled Cobra

Monte Iberia Eleuth

Moon Jellyfish

Moonglow Boa

Moorhen

Moose

Moray Eel

Morkie

Morpho Butterfly

Mosasaurus

Moscow Watchdog

Mosquito

Moth

Mountain Beaver

Mountain Bluebird

Mountain Cur

Mountain Feist

Mountain Gorilla

Mountain Lion
Mourning Dove

Mourning Warbler

Mouse

Mouse Spider

Mouse-Deer (Chevrotain)

Mozambique Spitting Cobra

Mud Snake

Mudi

Mudpuppy

Mudskipper

Mule

Mule Deer

Mulga Snake

Mullet Fish

Muntjac

Muscovy Duck

Musk Deer

Muskellunge (Muskie)

Muskox

Muskrat

Mussurana Snake

Muttaburrasaurus

Myna Bird