Predicted Kenyan and Tanzanian distributions of Colobus angolensis palliatus (green) and Colobus angolensis palliatus sharpei (blue) according to probability of suitability. White indicates unsuitable habitat and all other areas of suitability are normalized on a 0–1 scale where darker colors are closer to 1.0. Red indicates areas of overlap. Brown polygon indicates the 2008 International Union for Conservation of Nature Range Map (Kingdon et al., 2008). Purple dots are points considered C. a. palliatus; yellow dots are presence points considered C. a. sharpei (as defined by Rahm (1970)).

Two-dimensional nonmetric multidimensional scaling plot of the impact of species on similarity between odor samples. More similar profiles are closer together. Axes have arbitrary scales. Each data point resembles the mean odor profile of one individual (N = 39).

We present new data on the ingestion of minerals from termite mound soil by East African chimpanzees at three sites. Rich in minerals, termite mound soil contained the highest concentrations of iron and aluminium yet found in any of the dietary sources examined, as well as other minerals such as manganese and copper. We suggest mechanisms by which these minerals may come to be concentrated in termite mound soil, serving as a potentially important resource for wild chimpanzees.

Annual home ranges of a population of Sahamalaza sportive lemurs, Lepilemur sahamalaza, in north-west Madagascar, show no signs of a pair-based social organization.

Chimpanzees spontaneously use stick tools and pounding action to retrieve food from a testing apparatus.

Saimiri vanzolinii populations remained stable over 5 years, indicating that Mamirauá Reserve has been playing an essential role on its conservation.

Spatial distribution of the indri groups included in the genetic and paternity analyses (solid green polygons), and the schematic representation of unsampled neighboring groups (gray striped polygons, GX1 to GX7). The uppercase names within each studied group are the social fathers; the lowercase names are the offspring tested. “*” denotes the only individual we found with inconclusive paternity assignment.

Local people's attitude towards the endangered golden langur is primarily influenced by whether or not they have experienced crop damage by langurs. Their awareness of this primate species's globally endangered status is significantly influenced by their location of residence relative to (inside/outside) a protected area and their education level.

Relative adiposity (WHI3.0: weight divided by height to the third power) plotted against height for group-housed adult female and male rhesus macaques. The dark gray bar represents the proposed overweight and underweight boundaries for solitary-housed rhesus macaques. The light gray bar indicates the new lower boundary based on wild primates.

Camera trap image of a Global Positioning System-collared adult female olive baboon.

Capuchins prefer to look at faces of same-sex conspecifics.

Alouatta guariba clamitans crossing the road through the rope, very close to the baited trap in platform 2. Even after 25 weeks, it never entered or examined the platform or the baits, which increases the need to develop better strategies to capture and examine this species in the Atlantic Forest. Panoramic image was assembled using the software Microsoft Image Composite Editor 2.0 (ICE).