Animals

Moulting

Moulting (Molting): Natural Shedding and Ecdysis in Animals

Mountain gazelle

Mountain goat

Mountain goat (Oreamnos americanus)

Mountain pine beetle

Mountain pine beetle (Dendroctonus ponderosae)

Mountain pygmy possum

Mountain pygmy possum (Burramys parvus)

Mountain weasel

Mountain weasel (Mustela altaica)

Mourning collared dove

Mourning collared dove (Streptopelia decipiens)

Mourning dove

Mourning dove (Zenaida macroura)

Mouse

Mouse: small rodent, biology, behavior, and relationship with humans

Mouse deer

Chevrotain (mouse deer) — small forest ungulates of Tragulidae

Mouse-like hamsters

Mouse-like hamsters (Calomyscus): biology, distribution, taxonomy and human interactions

Mrs. Chippy

Mudpuppy

Mudpuppy (Necturus): the aquatic salamander of North America

Mudskipper

Mugger crocodile

Mule

Mule (horse–donkey hybrid)

Mule deer

Mule deer: description, behavior, distribution, and conservation

Müller's Bornean gibbon

Müller's Bornean gibbon (Hylobates muelleri)

Mullet

Mullet: coastal schooling fishes and the short-front, long-back haircut

Multituberculate

Multituberculates — extinct rodent-like mammals with a long fossil record

Munchkin cat

Muntjac

Muridae

Muriqui

Muriqui (Brachyteles): Brazil’s woolly spider monkeys

Muroidea

Musk deer

Musk deer (genus Moschus)

Musk ox

Musk ox (Ovibos moschatus): Arctic ruminant, adaptations and history

Muskellunge

Muskellunge (Esox masquinongy) — North American freshwater predator

Muskrat

Muskrat (Ondatra zibethicus) — semiaquatic rodent

Musky rat-kangaroo

Musky rat‑kangaroo (Hypsiprymnodon moschatus)

Mussaurus

Mussel

Mustelid

Mustelid (Mustelidae): diversity, biology, and interactions with people

Mustelinae

Mute swan

Mute swan (Cygnus olor): description, range, behavior, and human interactions

Muttaburrasaurus

Muttaburrasaurus: an Early Cretaceous ornithopod from Australia

My Gym Partner's A Monkey

My Gym Partner's a Monkey — Animated series about a human student in an animal school

Myliobatiformes

Myliobatiformes: the order of rays including stingrays and eagle rays

Myobatrachidae

Myomimus

Myomimus: the mouse-tailed dormice genus

Myomorpha

Myriapoda

Myriapoda: millipedes, centipedes and their relatives

Mysticeti

Mysticeti (Baleen Whales)

Myxophaga

Myxophaga: the small suborder of algae‑feeding beetles

Myxozoa

Myxozoa: highly reduced parasitic cnidarians of aquatic animals

Nabarlek

Nabarlek (Petrogale concinna)

Nagtglas's African dormouse

Nagtglas's African dormouse (Graphiurus nagtglasii)

Naked mole rat

Naked mole-rat (Heterocephalus glaber)