6 animal fathers who go the distance
Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent six days a week. By signing up, you confirm you are 16+, will receive newsletters and promotional content and agree to our Terms of Use and acknowledge the data practices in our Privacy Policy. You may unsubscribe at any time. In the animal kingdom, fatherhood exists on a spectrum. Some species like grizzly bears or lions will leave after mating and never really interact with their offspring again. Others do everything from keeping eggs warm solo to carrying their young in their mouths and even giving birth. “By the male investing in offspring it increases the chance of their survival, and specifically the survival of his genes,” Karen McDonald, an educational specialist at the Smithsonian Environmental Research Center tells Popular Science. “Male-only parental care is rare in mammals and vertebrates, but it’s surprisingly common in ray-finned fish (over 50 percent of families), with many species caring for large broods of their offspring from different females. In birds, male-parental care is less than one …








