June 17, 2020

Can Males Lactate?

It is physiologically possible for males to lactate! As we know, the female investment in almost all animals is much higher than that of males based solely on the value of eggs versus sperm. However, in mammals we’ve been dealt a double whammy when it comes to infant care. Not only do females have to gestate embryos within their own bodies, they then become the sole providers of nutritious food for newborns in the form
A point about humanity that I find thoroughly upsetting is trophy hunting. If you have no plans to utilize what you are going to kill to improve your biological fitness, then in my opinion there is no reason to kill it. Other animals are generally a great deal more efficient and purposeful with respect to maximizing biological fitness. I was surprised when I learned that wasteful killing is not restricted to our species. Surplus Killing
Hyena societies are matriarchal, which means that females are the socially dominant sex. They live in groups of sexually mature females and their offspring. When young males reach sexual maturity they are kicked out of the group. Adult males are low on the social scale. They aren’t generally permitted to socialize with the group, and often end up in small bachelor pods or as solitary individuals. There is one alpha female within a hyena clan.
weight
For most members of the animal kingdom, a little extra fat on the body is a good thing. It acts as insulation in cooler climates and can come in handy as an energy source in times of food shortage. However, too much extra weight can hinder basic activities in animals much the same as it does in our species. Photo via Pexels Members of the human species struggle with body size, too. Some of us
In addition to the varied concentrations of bioactives in mothers’ milk, mothers can also feel varied levels of stress during lactation. This results in varied concentrations of stress factors in milk. The Stress on First-Time Moms Primiparous (first-time) moms in the animal kingdom, specifically rhesus macaques, are often still growing themselves. This puts them in a position of making tradeoff decisions for current and future reproduction. They must decide if they should invest less in
Dr. Carin Bondar
Sex pervades everything, every aspect of our lives. Check out my interview with Eric from Sciencentric about what humans can learn about sex from animals, whether humans were ever designed for monogamy, and more. Back when genetic sequencing became a thing, we learned there was a massive difference between sexual monogamy and what we call social monogamy. Sexual monogamy happens when two individuals only have sex with each other. In the human world, we have
With Mother’s Day just around the corner, I made a few cards for moms based on my book Wild Moms: Motherhood in the Animal Kingdom. I hope these make you and your mom smile! Let me know which one is your favourite.