The Rock Hyrax
In spite of the size difference, the Rock Hyrax is the African elephant’s closest living relative, along with sea cows and manatees. These four mammals are unlike any other mammals, and share a few disproportionate physiological similarities in teeth, leg and foot bones, and a few other details.
The rock hyrax is so unlike other animals that it is placed in a separate order (Hyracoidea) by all itself.
The rock hyrax, also called rock rabbit or dassie, is a small furry mammal that looks very much like a very big guinea pig. They have stumpy toes with hooflike nails, four toes on each front foot and three on each back foot. The longer, clawlike nails on the inside toes of the back feet are used for grooming and scratching. The bottoms of the feet have a thick skin with a rubbery texture to assist in climbing steep rock surfaces and trees. The pads of the feet have glandular tissue which keeps the surface permanently moist to increase traction.
The rock hyrax is primarily found East Africa. Its coat is yellowish or grayish-brown, and the dorsal spot (a bare scent gland on the back covered with longer hair) is covered with black or yellow hair. Its head is rounded and the nose is blunt. However, other rock hyrax are known to have a more pointed, rodent-like nose. There is another species of hyrax called the tree hyrax which, obviously, spends a lot of time in trees. In some areas they are hunted for their thick, soft, long hair. The different species do not interact. Female hyraxes generally weight 5 to 9 pounds (2.5 to 4.2 kg), and males are 7 to 10 pounds (3.2 to 4.7 kg. Both males and females grow to be about 22 inches (55 cm).
Rock hyraxes are very adaptable. In East Africa they live at sea level and up to altitudes of over 14,000 feet and in habitats ranging from dry savanna to dense rainforest to cold Afro-alpine moorland.
Rock hyraxes live in colonies of about 50 in natural crevices of rocks or bolders. They regularly use “latrines” and in areas they inhabit, conspicuous white deposits from their urine form on rock faces. They are active in the daytime and like to bask in the sun on large rocks for long periods of time.
One dominant male will monopolize up to 17 females in a harem group. Solitary mature males live on the periphery of such harems.
What Does the Rock Hyrax Say?
Vocalizations include twitters, growls, whistles and shrieks. One group will answer the contact calls of another group. The raucous nocturnal shriek of the tree hyrax is most impressive, starting as a squeak or whistle, then rising to a piglike squeal and finally to a child’s scream. Hyraxes do most of their screaming as they ascend or descend trees during the night.
The Rock Hyrax feeds on vegetation matter. It prefers grass when available during rainy seasons. During dry periods, it will eat whatever is available, even consuming highly toxic plants, which doesn’t seem to affect them. They will also feed on fruit, insects, lizards and birds’ eggs They eat with the family group facing out from a circle to watch for signs of danger. If the territorial male gives the shrill shriek of alarm, the hyraxes either take cover or stay frozen on the spot, until the danger is gone. They can go a long time without water, getting adequate amounts of moisture from their food. Tree hyraxes feed on leaves and fruits.
The rock hyraxes have a gestation period of 7 months and give birth to two or three young during early summer. These young have the ability to run and jump about an hour after birth. They suckle until they are 3 months old, but they’ve already started eating by their second day. The young of all females in a family group often gather in a nursery group. The tree hyrax has fewer young (one or two at the most) than rock hyraxes, but they have many similar behaviors traits, such as always defecating and urinating on the same spot.
Hyraxes are preyed upon by leopards, pythons, large birds, caracals, servals and civets. They protect themselves from smaller predators by biting, but escaping to hiding places among the rocks is their best defense.
Did you know?
- Fossil remains indicate there were once hyraxes the size of oxen. This may explain its gestation period of 7 or 8 months, unusually long for an animal of its size.
- Rock hyraxes live in groups with one territorial male and up to 20 females and their young. Several groups may live in one area, but each male defends his territory from other males.
I hope you have enjoyed, “Rock Hyrax : Hyrax Closest Living Relative to the Elephant?“
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