The Réunion cuckooshrike is a passerine bird in the cuckooshrike family. It is endemic to the island of Réunion, where it is restricted to two areas of mountain forest in the north of the island. Males are dark grey above and pale grey beneath, while females have dark brown upper parts and a streaked breast. The population has been declining and the range contracting, being currently about 16 square kilometres (6.2 sq mi), and the International Union for Conservation of Nature has rated the species as "critically endangered", with the possibility that the bird could be wiped out by a tropical storm. Conservation efforts are being made by attempting to control the cats and rats which prey on the chicks, and this seems to have resulted in the population stabilising.
The Romanian hamster or Dobrudja hamster is a species of rodent in the family Cricetidae. It is found in Bulgaria and Romania.
The Madagascar swamp warbler is a species of Old World warbler in the family Acrocephalidae. It is found only in Madagascar. Its natural habitat is swamps.
Ptychadena newtoni is a species of frog in the family Ptychadenidae. It is endemic to the island of São Tomé in São Tomé and Príncipe, where it occurs up to 600 metres elevation. Its natural habitats are swamps, freshwater marshes, arable land, plantations, rural gardens, urban areas, heavily degraded former forest, ponds, and canals and ditches. It is threatened by habitat loss. The animal was first described as Rana newtoni by Bocage in 1886. The species is named after Francisco Xavier Oakley de Aguiar Newton (1864–1909).
The São Tomé fiscal, or Newton's fiscal, is a species of bird in the family Laniidae. It is endemic to São Tomé Island, São Tomé and Príncipe. It is 20 to 21 centimeters long. The bird is black above with a white shoulder-scapular bar. The São Tomé fiscal has a pale yellow chin, breast, belly, flanks vent and under tail. Its graduated tail has all black central tail feathers and an increasing amount of white on outer web from inner to outer tail feathers. The Lanius newtoni has a clear voice with a whistle tiuh tiuh often repeated and metallic tsink tsink audible over a long distance.
Ctenoglypta is a genus of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Euconulidae, the hive snails.
Gonidomus newtoni is an extinct species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Streptaxidae.
Gonidomus is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Orthogibbinae of the family Streptaxidae.
Partula taeniata, common name the Moorean viviparous tree snail, is a species of terrestrial gastropod in the Partulidae family. It is endemic to French Polynesia.
Thomea newtoni is a species of air-breathing land snail, a terrestrial gastropod mollusk in the family Achatinidae. This species is endemic to São Tomé and Príncipe.
Pseudagrion newtoni, the harlequin sprite, is a species of damselfly in the family Coenagrionidae.
Thalassoma newtoni is a species of marine fish in the family Labridae, the wrasses. It occurs in the waters around São Tomé and Príncipe, and possibly along the West African coast between Ghana and Angola. It inhabits rocky reefs to depths around 40 m (130 ft).
Rio Xufexufe is a river in the island of São Tomé, São Tomé and Príncipe. The river flows southward through the southern part of the Lembá District and empties into the Atlantic Ocean 10 km northwest of Vila Malanza. Its catchment area is 16.5 km2 (6.4 sq mi). The endangered birds São Tomé olive pigeon and São Tomé fiscal have been observed in the catchment of the river.
Miniopterus newtoni is a species of bat that is endemic to São Tomé and Príncipe.
