Moulting
The process by which animals cast off parts of their body for beneficial purposes.
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Moulting is the periodic replacement of feathers, fur, or exoskeleton in many animals.[1][2][3] In medieval times it was known as "mewing", from the French verb "muer".[4]
Quick Facts
- Process
- Shedding of epidermis
- pelage
- or exoskeleton
- Occurrence
- Birds
- reptiles
- amphibians
- arthropods
- dogs
- guinea pigs
- hamsters
- rabbits
- Bird frequency
- At least once a year; many moult twice, a few three times
- Dog frequency
- Twice each year (spring and autumn)
- Forced moulting
- Used in commercial layer hens to reinvigorate egg-laying
- Medieval term
- Mewing (from French 'muer')
Facts from the source article.
Key facts and history
In arthropods, moulting is called ecdysis and permits metamorphosis.[2] Once feathers are fully grown, they are no longer living tissue and become worn down, requiring periodic replacement.[1] Annually, adult birds undergo at least one moult; however, some species have two, and a small number have three moulting cycles per year.[1] The replacement of feathers is typically a gradual process, and it is uncommon for a bird to lose all its feathers simultaneously.[1]
Adequate feather coverage must be maintained by birds to control their internal temperature and to keep water from soaking their skin.[1] During their yearly wing moult, certain bird species lose the ability to fly and therefore look for safe areas with ample food.[5] Depending on factors like breed and surroundings, the majority of canines shed their fur twice a year, during the spring and fall.[6] To stimulate renewed egg production, commercial laying hens are subjected to forced moulting in certain nations.[7]
What the research sources say
The FurBabies Botanicals guide states that moulting is governed by hormonal changes, environmental factors, and genetics.[3] Syrian hamsters are more prone to visible seasonal moulting, whereas dwarf hamsters show subtler changes.[3] Rex rabbits shed less but can develop bald patches if moulting is uneven or the rabbit is stressed.[3] The guide recommends daily brushing during peak moulting seasons to prevent hair ingestion.[3]
Hamsters have seasonal moulting patterns influenced by daylight changes.[3] Proper nutrition, grooming, and environmental management help ensure a healthy moulting process.[3]
References
- Wikipedia, "Moulting" (CC BY-SA 4.0), which cites: Terres, "The Audubon Society Encyclopedia of North American Birds", Knopf, 1980, p. 616–617 (we also read that source) en.wikipedia.org
- Wikipedia, "Moulting" (CC BY-SA 4.0), which cites: Stokstad, "Insect molting is 'like having your lungs ripped out'", sciencemag.org, 29 August 2014 (original not read by us) en.wikipedia.org
- "Understanding Moulting in Guinea Pigs, Hamsters, and Rabbits: A Comprehensive Guide", FurBabies Botanicals, 2025. facts only, no text reused. myfurbabies.co.uk
- Wikipedia, "Moulting" (CC BY-SA 4.0), which cites: "Moult - Definition in the English-French Dictionary - Cambridge Dictionary", dictionary.cambridge.org (original not read by us) en.wikipedia.org
- Wikipedia, "Moulting" (CC BY-SA 4.0), which cites: "Birds doing in the octopus way: Fright moulting and distraction of predators", Ornis Scandinavica, 1988, p. 165–166 (original not read by us) en.wikipedia.org
- Wikipedia, "Moulting" (CC BY-SA 4.0), which cites: Blackburn, "The Everything Dog Grooming Book: All you need to help your pet look and feel great!", Simon & Schuster, 2008, p. 110; Dog Fancy, "Pug", Lumina Media, 2011, p. 36 (we also read that source) en.wikipedia.org
- Wikipedia, "Moulting" (CC BY-SA 4.0), which cites: Molino, A.B., Garcia, E.A., Berto, D.A., Pelícia, K., Silva, A.P. and Vercese F., "The effects of alternative forced-molting methods on the performance and egg quality of commercial layers", Revista Brasileira de Ciência (original not read by us) en.wikipedia.org
Each numbered sentence above was checked against the source it cites before publication. Sentences citing Wikipedia adapt text from the English Wikipedia article Moulting (contributors), used under CC BY-SA 4.0; this entry is available under the same licence. Other sources were used for facts only; no text or images are copied from them.
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Sources
Compiled from Wikipedia and the sources listed below. Text from Wikipedia is available under CC BY-SA 4.0; this entry is adapted from it.
- Wikipedia: Moulting (CC BY-SA 4.0).
- Word definitions: the , each quoted from its Wikipedia article.
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