Relating to or characterized by a short, broad skull with a width that is 80-85% or more of the length.
From Greek brachys (short) + kephalē (head) + -ic (suffix making it adjectival), standard scientific terminology for skull morphology.
Dog breeds are still classified this way—bulldogs are brachycephalic, which is why they have breathing problems; the trait was artificially selected for looks, creating health issues that show how human preferences can harm animals.
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