|Scientific name :||Hyaenodon gigas|
|Time period :||Late Eocene to early Miocene epoch|
|Primary diet :||Carnivore|
|In the series|
|Fatalities caused :||One Chalicotherium|
|Appearances :||Walking With Beasts|
Hyaenodon's genus name translates into "hyena tooth" even though the animal is nowhere near related to any feliforms. Another feature that differentiates Hyaenodon and hyenas is size. The genus Hyaenodon has several species all ranging in size. The largest species, H. gigas, is one of the largest terrestrial mammalian carnivores ever discovered. This species measured 3 metres (10 ft) in length and weighed a total of 500 kg (1,100 lb). On the contrary, the two species H. microdon and H. mustelinus weighed 100 times less than H. gigas.
Hyaenodon was an apex predator. This animal preyed on the bizarre group of animals called chalicotheres, newborn or juvenile indricotheres, bear-dogs and a large, omnivorous relative of pigs and wild boars, Entelodon. Its sheer size and meat-shearing teeth would make a deadly combination, making it an efficient and successful predator. However, like most other early carnivorous mammals, Hyaenodon wasn't the brightest of animals.
In the seriesEdit
A pair of Hyaenodon were seen watching a mother Indricotherium in labour giving birth to a male calf. The pair confronted and continuously attacked the mother and her calf but were unable to reach the calf inbetween its mothers legs. It is revealed that in the morning the mother and calf did indeed survive the Hyaenodon attack.
A Hyaenodon is seen stalking a herd of Chalicotherium. It successfully attacks and kills one by biting its neck. Before the animal could eat, a trio of Entelodons appeared and challenged the Hyaenodon over the carcass. In a futile attempt to hide the scent of the carcass, the Hyaenodon defacated on it but it was worthless. The Hyaenodon was overpowered and was chased away by the Entelodons.During a downpour, a Hyaenodon is seen chasing an Entelodon but slips.
- Hyaenodon is said to have bone-crushing teeth in the series. In reality, it had teeth designed to shear meat off the body. It's still likely that they were capable of crushing bone.
- It is coincidental that Hyaenodon has lived the same amount of time as hyenas, both being 21 million years.
- The model used for Hyaenodon in Walking With Beasts has recently been reused for the BSkyB TV series Sinbad.