Characteristics of Cats Admitted to Czech Shelters

The aim of this study was to describe the numbers and characteristics of cats entering Czech shelters. Records of sheltered cats were collected from three cat shelters situated in different regions of the Czech Republic from 2011 to 2015. A total of 2170 cat admissions were analyzed in this study. Significantly (p < .001) greater numbers of […]

Age at sexual maturity of males and timing of the mating season of polar bears (Ursus maritimus) in Greenland

Age at sexual maturity among male polar bears (Ursus maritimus) and timing of the mating season were studied by microscopic and macroscopic analysis of the reproductive organs from 165 male and 92 female Greenland polar bears. Males became sexually mature in the spring following their fifth birthday. Testes sampled during the spring reached 95% of […]

A review of injuries caused by elephants in captivity: an examination of predominant factors

Injuries to people caused by elephants in zoos can be lethal. Data on incidents of injury to keepers and visitors were collated from newspaper articles, personal communications with zoo directors and keepers, and published information from the European Elephant Group. Although the data were not of consistent quality and detail across the three sources, the […]

Sleep and social status in captive gelada baboons (Theropithecus gelada)

Sleep was investigated in 10 captive gelada baboons (Theropithecus gelada), belonging to two harem groups by continuous infrared video recording (n = 4 males, n = 3 females, n = 3 juveniles). The aim was to investigate the relation between sleep and social status. Social status was assessed during daytime activities, when the two harem […]

Middle-aged mice with enrichment-resistant stereotypic behaviour show reduced motivation for enrichment

For captive animals, living in barren conditions leads to stereotypic behaviour that is hard to alleviate using environmental enrichment. This resistance to enrichment is often explained via mechanisms that decouple abnormal behaviour from current welfare, such as ‘establishment’: a hypothetical process whereby repetition increases behaviour’s predictability and resistance to change. If such hypotheses are correct, […]

Nocturnal behavior in a group of female African elephants

Abstract 10.1002/zoo.20084.abs The nocturnal behavior of a stable group of female, African elephants (Loxodonta africana africana) was studied to: (1) examine their behavior as a function of hour of night; (2) qualitatively compare the elephants’ activity budgets to those reported in a previous study; and (3) document the presence of aggressive and stereotypic behaviors that […]

Age-specific fecundity of mammalian populations: A test of three mathematical models

Abstract 10.1002/zoo.10029.abs Empirical age-specific fecundity distributions are often based on small samples and hence include high levels of sampling error, particularly at the older ages. One solution to this problem is to smooth the distributions using appropriate models. The aim of this article is to compare the utility of three models for smoothing and/or graduating […]

Similarities and differences in activities and agonistic behavior of male Eastern grey kangaroos (Macropus giganteus) in captivity and the wild

Abstract 10.1002/1098-2361(2000)19:63.3.CO;2-C The behavior of free-ranging and captive Eastern grey kangaroos Macropus giganteus, was observed by the same observers, with similar methods and under similar vegetational/climatic conditions in a 4.2-ha enclosure at Neuwied Zoo, Germany and at Grampians National Park, Victoria, Australia. Data were collected from a zoo group of 56 animals and a free-ranging […]

Effects of hunting group size, snow depth and age on the success of wolves hunting moose

To study factors important to the success of wolves, Canis lupus, hunting moose, Alces alces, we analysed data from more than 4000 km of snow tracking of wolves during 1998-2003 in Scandinavia. We used two methods to estimate hunting success for 17 wolf territories from 185 observations of wolf attacks on moose. On average, hunting success […]

Nesting success in Darwin’s small tree finch, Camarhynchus parvulus: evidence of female preference for older males and more concealed nests

Age-assortative mating has been documented among birds, but there is little evidence of direct benefits to females that pair with older males. In this study, I examined nest concealment in Darwin’s small tree finch and tested the following predictions: (1) nest concealment increases with male age, (2) females prefer males that build well-concealed nests, and […]