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The long neck of the giraffe presents a unique problem in the regulation of the systemic arterial blood pressure and in the maintenance of the cerebral circulation. In 1954, Goetz and Budtz-Olsen succeeded in measuring the arterial blood pressure in a standing, unanesthetized giraffe. In this animal, approximately 13 feet tall, the carotid artery mean pressure was found to be 200 mm. Hg at the base of the brain. The present study was undertaken 2 years later as a sequel
Since data concerning the distribution of the species and races of giraffe are scarce, the following observation, which concerns apparent hybrids between the reticulated giraffe (Giraffa camelopardalis reticulata) and the Masai giraffe (G. capensis tippelskirchi), a race of the southern species, seems noteworthy. The reticulated giraffe inhibits such low-level deserts in Kenya as lie north of the Tana River and east of Lake Rudolph, and also adjacent parts of southern Abyssinia; while the Masai giraffe occurs in deserts, bush country
1891 Bryden On the present distribution of the giraffe, south of the Zambesi, and on the best means of securing living apecimens for European collections.
Fennessy et al. show that multi-locus population genetic analyses indicate four distinct giraffe species instead of one. As the most inclusive genetic analysis of giraffe relationships to date, the findings highlight the need for targeted conservation efforts of the world’s tallest megafauna.