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The Giraffidae are a family of ruminant artiodactyl mammals that share a recent common ancestor with deer and bovids.This family, once a diverse group spread throughout Eurasia and Africa, presently comprises only two extant genera, the giraffe (between one and eight, usually four, species of Giraffa, depending on taxonomic interpretation) and the okapi (the only known species of Okapia).
Some biologists suggest the modern giraffes descended from G. jumae; [10] others find G. gracilis a more likely candidate. G. jumae was larger and more robust, while G. gracilis was smaller and more slender. [6] The changes from extensive forests to more open habitats, which began 8 mya, are believed to be the main driver for the evolution of ...
There are several carnivores that prey on them, including large cats (e.g., lions) and bears. Other predators are crocodiles, wolves and dogs, large raptors, and for small species and young animals, large snakes. For cetaceans, possible predators include sharks, polar bears, and other cetaceans; in the latter is the orca, the top predator of ...
The marsupial lion, Thylacoleo carnifex, had retractable claws, the same way the placental felines do today. [25] Microbats, toothed whales and shrews developed sonar-like echolocation systems used for orientation, obstacle avoidance and for locating prey. Modern DNA phylogenies of bats have shown that the traditional suborder of echolocating ...
The number of giraffes has decreased by nearly 30% since the 1980s, per the Giraffe Conservation Foundation Giraffes Need Protections of Endangered Species Act After Declining Numbers, U.S ...
In addition, Rothschild's giraffe displays no markings on the lower leg, giving it the impression of wearing white stockings. [2] Another distinguishing feature of Rothschild's giraffe, although harder to spot, is the number of ossicones on the head. This is the only Giraffa phenotype to be born with five ossicones. Two of these are the larger ...
Author Debra Young Hatch signs copies of her children's book, "Giraffes in My Closet," at Barnes & Noble Friday, June 21, 2024.
Thornicroft's giraffe (Giraffa camelopardalis thornicrofti), also known as the Rhodesian giraffe or Luangwa giraffe, is a subspecies of giraffe. It is sometimes considered a species in its own right (as Giraffa thornicrofti ) [ 2 ] or a subspecies of the Masai giraffe (as Giraffa tippelskirchi thornicrofti ).