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In other species, males that are smaller than females have higher fitness. As such, many sex-specific morphological adaptations (for example, in Dytiscidae diving beetles, females have setose dorsal furrows that males do not and males have suction cups on their forelegs that females do not [18]) are sexual dimorphisms caused by sexual coercion.
An orangutan peeling a banana with its hand and foot. The Bornean orangutan diet is composed of over 400 types of food, including wild figs, durians (Durio zibethinus and D. graveolens), [29] leaves, seeds, bird eggs, flowers, sap, vines, [30] honey, fungi, spider webs, [30] insects, and, to a lesser extent than the Sumatran orangutan, bark.
However, the discovery of a previously unknown orangutan population in Malaysian Borneo is reason to hope. Threats. Human actions have reduced orangutan habitats by more than 80% over the past 20 ...
Most of these brachiators were smaller than average apes, so were able to move through the trees easier than gorillas or orangutans, although female orangutans do brachiate through the trees occasionally. The brachiators held their bodies upright in the trees, and would sometimes go on the ground and walk upright.
Human activity is a big part of the problem when it comes to threats to the Sumatran orangutan. Some threats can be reversed with the enforcement of current laws and habitat conservation efforts.
The San Diego Zoo recently brought in a bubble machine for some of its animal residents -- and the results were too cute!
A third species, the Tapanuli orangutan (P. tapanuliensis), was identified definitively in 2017. The orangutans are the only surviving species of the subfamily Ponginae, which diverged genetically from the other hominids (gorillas, chimpanzees and humans) between 19.3 and 15.7 million years ago.
ATLANTA (Reuters) - Chantek, a male orangutan who was among the first apes to learn sign language, could clean his room and memorized the way to a fast-food restaurant, died on Monday at age 39 ...