The eastern lesser bamboo lemur is gray in colour, sometimes with a red patch on its head.

As its name suggests, the eastern lesser bamboo lemur feeds mainly on bamboo.

It was originally proposed as a subspecies of the eastern lesser bamboo lemur and is of similar size.

As a result the golden bamboo lemur, which eats bamboo, is very resistant to cyanide poisoning.

The golden bamboo lemur is crepuscular.

The southern lesser bamboo lemur is further supported as a separate species by recent mitochondrial DNA research.

It is the main food source for the bamboo lemurs, especially the golden bamboo lemur.

Wright had a hunch that if a bamboo lemur could be found anywhere, it would probably be where its main dietary need was plentiful.

The golden bamboo lemur ingests many times the quantity of the taxiphyllin-containing bamboo that would kill a human.

However, it is darker and redder than the eastern lesser bamboo lemur, with a shorter tail and different vocalizations.

The new species was named Hapalemur aureus, the Golden Bamboo Lemur.

Geographic ranges have contracted for numerous species, including the indri, greater bamboo lemur, and ruffed lemurs.

Golden Bamboo Lemur (Hapalemur aureus)

Greater Bamboo Lemur (Prolemur simus)

Eastern lesser bamboo lemur (Hapalemur griseus griseus)

Armed with a grant from the World Wildlife Fund, Dr. Wright hoped to find the "probably extinct" greater bamboo lemur.

Eastern Lesser Bamboo Lemur (Hapalemur griseus)

The hunch proved fruitful when not only was the Greater Bamboo Lemur rediscovered but one that had not been known to exist was also found.

Over these two days we head out on foot to explore the evergreen primary forest, home to some of Madagascar's rarest Lemurs, the Golden Bamboo Lemur.

The greater bamboo lemur, formerly known as Hapalemur simus, was considered part of this genus, but is now classified as belonging to the genus Prolemur.

The Ranomafana bamboo lemur (H. g. ranomafanensis), or Ranomafana gentle lemur, is the third subspecies.

The golden bamboo lemur (Hapalemur aureus), for instance, eats giant bamboo (Cathariostachys madagascariensis), which contains high levels of cyanide.

The greater bamboo lemur lives in the Madagascan rainforest and has been affected by the decline in giant bamboo stems which are now used up by human settlements.

The greater bamboo lemur (Prolemur simus), is one of the world's most critically endangered primates, according to the IUCN Red List.

Cotton-top tamarins were formerly housed on the Geoffroy's Marmoset Island, whilst the bamboo lemur exhibit was formerly home to black-and-white ruffed lemurs.

The critically endangered Lac Alaotra gentle lemur has one of the most restricted ranges...

Population status of the Alaotran gentle lemur Hapalemur griseus alaotrensis (subscription required).

The Lac Alaotra gentle lemur (Hapalemur alaotrensis) has even been reported to be a good swimmer.

In both the aye-aye and Lac Alaotra gentle lemur, birth (parturition) occurs over a six-month period.

These reedbeds provide the sole habitat of the endemic Alaotra Gentle Lemur (Hapalemur griseus alaotrensis).

The Ranomafana bamboo lemur (H. g. ranomafanensis), or Ranomafana gentle lemur, is the third subspecies.

The grey bamboo lemur, grey gentle lemur, or the eastern lesser bamboo lemur (Hapalemur griseus griseus) is the smallest of the bamboo lemurs.

The western lesser bamboo lemur (Hapalemur occidentalis), also known as the northern bamboo lemur or western gentle lemur, is species of bamboo lemur endemic to Madagascar.

Except for the aye-aye and the Lac Alaotra gentle lemur, lemurs are seasonal breeders with very short mating and birth seasons influenced by the highly seasonal availability of resources in their environment.

The eastern lesser bamboo lemur (Hapalemur griseus), also known as the gray bamboo lemur and the gray gentle lemur, is a small lemur endemic to Madagascar, with three known subspecies.

The greater bamboo lemur (Prolemur simus), also known as the broad-nosed bamboo lemur and the broad-nosed gentle lemur, is the largest bamboo lemur, at over five pounds or nearly 2.5 kilograms.

The eastern lesser bamboo lemur (Hapalemur griseus griseus), also known as the gray bamboo lemur, eastern gray bamboo lemur, or gray gentle lemur, was the original species described in 1795.

The Lac Alaotra gentle lemur or bandro (Hapalemur alaotrensis), which lives in the reed beds of Lac Alaotra, spends much of its time in water and can swim well, unlike other lemur species, which only venture to water to drink.

The bamboo or gentle lemurs are the lemurs in genus Hapalemur.

The new species was named Hapalemur aureus, the Golden Bamboo Lemur.

Population status of the Alaotran gentle lemur Hapalemur griseus alaotrensis (subscription required).

The lemurs of the Hapalemur genus have more manual dexterity and hand-eye coordination than most lemurs.

The relationship between the ring-tailed lemur and bamboo lemurs (both Hapalemur and Prolemur) is the least understood.

Golden Bamboo Lemur (Hapalemur aureus)

Eastern Lesser Bamboo Lemur (Hapalemur griseus)

These reedbeds provide the sole habitat of the endemic Alaotra Gentle Lemur (Hapalemur griseus alaotrensis).

For example, Hapalemur and Prolemur have short snouts, while the ring-tailed lemur and the rest of Lemuridae have long snouts.

Only the ring-tailed lemur, the bamboo lemurs (genus Hapalemur), and the black-and-white ruffed lemur (Varecia variegata) are known to consume herbs.

The ring-tailed lemur is thought to share closer affinities to the bamboo lemurs of the genera Hapalemur and Prolemur than to the other two genera in its family.

An individual Salanoia durrelli was observed swimming in 2004 by the Durrell Wildlife Conservation Trust (DWCT) during a survey of bamboo lemurs (Hapalemur) in the Lac Alaotra area, the largest wetlands of Madagascar.

The observed morphological distinctiveness might be result of adaptations to life in the Alaotra wetlands, similar to the Alaotra bamboo lemur species, Hapalemur alaotrensis, which is also recognized as a distinct species despite being genetically close to the more widespread Hapalemur griseus.