Animal Parenting

How Primate Moms React to the Death of Offspring

September 1, 2021 0

Primates are the most well-observed group of animals when it comes to the topic of a mother’s reaction to offspring death. Cases of continued postmortem maternal care have been observed across several species of monkeys […]

Animal Reproduction

Cryptic Female Choice

August 25, 2021 0

“Cryptic female choice” is essentially a female’s way of exercising some post-coital power over whose sperm will fertilize her eggs. There are many reasons why a female would want to retain some kind of control […]

Animal Reproduction

Male Rats Run Out Of Sperm But Still Engage In Sex

August 18, 2021 0

Rats (superfamily Muroidea) have a well-studied mating system that often involves males becoming sexually satiated. This means that they literally get tapped out of sperm and it takes approximately fifteen days for their fertility to […]

Animal Reproduction

Obligate Diapause – Suspending Pregnancies in Carnivores

August 11, 2021 0

As opposed to the rodents who experience facultative diapause, carnivore moms experience obligate diapause. Obligately diapausing mothers experience a period of embryonic inactivity each time a pregnancy occurs. Regardless of environmental conditions, there is a […]

Animal Health

Self-Anointing For Medical Care

August 4, 2021 0

A dab of this, a drop of that – we humans are consistently covering our bodies with creams, oils, and ointments of all kinds. From moisturizer to perfume, from antibiotic ointment to soothing muscle rubs, […]

Animal Reproduction

The Grandmother Hypothesis for Menopause

July 28, 2021 0

We’ve already covered one hypothesis for why menopause exists, but there is another main hypothesis for the advent of reproductive cessation, and this one is an adaptive one. Picture it: as ancestral humans were expanding […]

Animal Parenting

Maternal Behaviour and Recognition

July 21, 2021 0

Physiological, social, and environmental elements have influenced the evolution of the immense diversity in maternal behaviour across the mammalian order. There are two general phases of the establishment of maternal care in primates: the initial […]