Original Research

Notes on age determination, growth and measurements of Brown Hyaenas Hyaena Brunnea from the Kalahari Gemsbok National Park

M.G.L Mills
Koedoe | Vol 25, No 1 | a604 | DOI: https://doi.org/10.4102/koedoe.v25i1.604 | © 1982 M.G.L Mills | This work is licensed under CC Attribution 4.0
Submitted: 01 December 1982 | Published: 02 December 1982

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M.G.L Mills, Kalahari Gemsbok National Park, South Africa

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Abstract

Brown hyaenas were aged on the basis of tooth eruption and wear and five age-classes were recognised. Weights and seven different body measurements were recorded from 38 immobilised hyaenas. Full size is reached at the age of 30 months, but age-class 5 animals were significantly lighter than were animals from the other adult age-classes. This was probably due to the worn down premolars of old animals resulting in less efficient bone chewing. With a few puzzling exceptions the sizes of brown hyaenas from different parts of their distribution range are similar.

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