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This form of infanticide represents a struggle between the sexes, where one sex exploits the other, much to the latter's disadvantage. It is usually the male who benefits from this behavior, though in cases where males play similar roles to females in parental care the victim and perpetrator may be reversed (see Bateman's principle for discussion of this asymmetry).
For example, female white-headed leaf monkeys were observed to wean their infants significantly more quickly during male takeovers as compared to socially stable periods. [32] Females with infants too young to be weaned left with the old males and returned after their offspring had fully weaned, again after a significantly shorter weaning ...
To investigate living environment effects, female gerbils in three housing groups (FH-family housed, PH-pair mate housed, and SH- singly housed) were observed and compared to each other. Unfamiliar pups were placed in a cage with each female to observe any infanticide response. Following the pup test samples of prolactin and progesterone were ...
The concept of death in the animal kingdom is more diverse than we will ever know, writes Susana Monsó. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 ...
White children are bred on ranches for consumption and slaughtered at around 12 to 14 years of age (when their flesh is considered particularly tasty) or sometimes already as babies. Boys are often castrated several years before their death, as that is thought to improve the quality of their meat. [122]
Minnesota Department of Health documents show that eight infants were born alive during abortion procedures between 2019 and 2022, and, in 2023, Walz signed legislation that repealed most of a ...
Some animals starve to death shortly after birthing their young while others are eaten by their own young -- but these mothers make the ultimate sacrifice. Click through for 10 animal mothers that ...
Some tortoises show negligible senescence. Negligible senescence is a term coined by biogerontologist Caleb Finch to denote organisms that do not exhibit evidence of biological aging (), such as measurable reductions in their reproductive capability, measurable functional decline, or rising death rates with age. [1]