The "bearcat" of Southeast Asian forests — a shaggy, long-tailed civet relative that smells strongly of popcorn (from a chemical it produces to mark territory), uses its prehensile tail to hang from branches, and is one of the only mammals that can delay its own pregnancy through embryonic diapause.
Popcorn scent
The binturong produces a scent that humans perceive as strongly reminiscent of buttered popcorn or corn chips. This comes from 2-acetyl-1-pyrroline — the same compound that gives popcorn and fresh-baked bread their characteristic smell — found in the binturong’s urine, which it uses to mark branches and territory. The compound is produced when certain chemicals in the urine react. The binturong wipes its scent glands on branches as it walks.
The prehensile tail
Binturongs are among very few Old World mammals with a fully prehensile tail — capable of gripping branches and bearing the animal’s weight. The tail can be up to 90 cm long and is used as a fifth limb while navigating the canopy. Like fossa, binturongs can rotate their ankles and descend trees head-first.
Embryonic diapause
Female binturongs can delay embryo implantation — a process called embryonic diapause. After fertilisation, the blastocyst can remain dormant in the uterus for weeks or months before implanting, allowing females to time births to favourable seasons regardless of when mating occurred. This is rare among carnivores.
Declining habitat
Binturongs are solitary and require large, intact forest. Deforestation for palm oil and logging across Southeast Asia has drastically reduced suitable habitat. They are also captured for the exotic pet trade and killed for traditional medicine.
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