Adult male killer whales are the world’s biggest mama’s boys. Literally. Matriarchs strongly protect their adult sons, keep them free from agonistic interactions with other
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
“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
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
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 dab of this, a drop of that – we humans are consistently covering our bodies with creams, oils, and ointments of all kinds. From
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
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
In many anuran (frog and toad) species, females have a sperm-storage organ (a spermatheca) that enables them to keep sperm for long periods of time.
Optimal foraging theory predicts that when there is intense competition for preferred resources, organisms should increase their diet breadth to include other less optimal items.
