She's a "bad" mom because ... despite their cuddly appearance, hamster moms can be cold-blooded killersthey often eat their own young.
Give Mom a break, because ... she was planning for the best, and now she's just dealing with the rest.
Forbes believes hamster moms practice "parental optimism" by creating broods bigger than they may be able to rear.
"They don't know how much food is going to be out there," he said. "They create a litter with a few spare offspring to ensure high-quality young even if [food is scarce] or there are developmental defects in others."
Photograph by Heidi and Hans-Jurgen Koch/Minden Pictures