Training program for voluntary ejaculation is described. In May 1998 we began the training program with Xebo. At the time of this writing (March 1999) Xebo understands ten different orders. ... So we hope that...
Several simple feeding enrichment devices, including a herb garden, are described.
A captive group of white-faced capuchins, Cebus capucinus, was presented with four deep litters in simultaneous choice (or preference) tests. A floor covering of ground corn cob, woodchips, wood wool or peat was presented once...
A device was designed that allows us to blow forage [e.g., chicken scratch] into both empty and occupied cages and over a wide area.
A survey of selected enrichment programs for group-housed marmosets. Older individuals ... appear to habituate themselves less to the presence of visitors, and get very agitated when approached. ... High perches should be provided to...
It is generally thought that early forced-weaning of infants would reduce the time from parturition to the first fertile postpartum estrus thus maximizing reproductive efficiency. ... From a survey of 23 animal records we determined...
The chimpanzees are fascinated with the bubbles floating .... run around sticking out their tongues, much as a child collecting snowflakes, and attempting to catch them - a bit bewildered as it disappears.
At the Primate Foundation of Arizona (PFA), we provide many different types of both destructible and indestructible objects, but seldom provide rigid plastic balls. They are frequently thrown about the enclosure during displays and have...
Subjects were tested on one single occasion each when they had access to a toy for 15 minutes. High percentages of use by two chimpanzees adjacent to social groups suggest that the King Kong toy...
A survey of 96 primatological articles revealed that cage location of research monkeys is usually not mentioned (98%), in spite of the fact that the environment of upper- and lower-row housed animals markedly differs in...