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FRONTIERS IN PSYCHOLOGY, ISSN 1664-1078, 09/2019, Volume 10
We report on the case of an extraordinary orangutan who spontaneously produced over a thousand drawings in 5 years. This female orangutan, Molly, started... 
drawing behavior | orangutan (Pongo pygmaeus) | PSYCHOLOGY, MULTIDISCIPLINARY | aging | evaluation of drawings | environmental effects | Analysis | Orangutan
Journal Article
Primates, ISSN 0032-8332, 4/2010, Volume 51, Issue 2, pp. 179 - 182
Journal Article
Primate Research, ISSN 0912-4047, 2017, Volume 33, Issue 2, pp. 79 - 89
Journal Article
Perceptual and Motor Skills, ISSN 0031-5125, 4/2012, Volume 114, Issue 2, pp. 429 - 432
Although previous studies have confirmed that trained orangutans visually discriminate between mammals and artificial objects, whether orangutans without... 
PSYCHOLOGY, EXPERIMENTAL | PAN-TROGLODYTES | Behavior, Animal - physiology | Female | Pongo - psychology | Animals | Visual Perception - physiology | Discrimination (Psychology) - physiology | Measurement | Discrimination | Orangutan | Visual perception
Journal Article
Primates, ISSN 0032-8332, 10/2001, Volume 42, Issue 4, pp. 291 - 299
The reproductive status of female gorillas (Gorilla gorilla gorilla) was estimated by measuring the sex steroid hormones in fecal samples instead of in blood... 
Life Sciences | Estradiol-17β | Gorilla gorilla gorilla | Behavioural Sciences | Zoology | Female reproductive status | Progesterone | Animal Ecology | Evolutionary Biology | Fecal steroid | EXCRETED STEROIDS | LOWLAND GORILLAS | progesterone | estradiol-17 beta | CIMETIDINE | PREGNANCY | EXTRACTION | CYCLICITY | ZOOLOGY | female reproductive status | fecal steroid | NORMAL MENSTRUAL-CYCLE | OVARIAN-FUNCTION
Journal Article
Primate Research, ISSN 0912-4047, 2010, Volume 26, Issue 1, pp. 59 - 66
Journal Article
Primate Research, ISSN 1880-2117, 01/2010, Volume 26, Issue 1, pp. 59 - 66
Geophagy (soil-eating) is one of the well-known behaviours in many primate species, but the factors influencing this behaviour have been less known. In the... 
Journal Article
Primate Research, ISSN 0912-4047, 01/2010, Volume 26, Issue 1, pp. 59 - 66
Geophagy (soil-eating) is one of the well-known behaviours in many primate species, but the factors influencing this behaviour have been less known. In the... 
Vegetation type | Geophagy | Soil | Parks
Journal Article
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