Baby Polar Bears
Baby polar bears need to survive temperature of around -20…-30 degrees Fahrenheit, constantly struggling for mother’s breast milk. Receding ice caps make hunting and general surviving extremely hard for these big bears. There were even cases where the mother was forced to eat her own cubs to survive. Nature is ruthless.
Just like house cats, tiger cubs come into this world blind and very much defenseless. Their mother brings them food and after some time one of the baby tigers starts to assert dominance. Mom likes that, she sees a future for that cub, and lets him feed first. Oh and apparently male tigers sometimes visit mom and straight out kill all the cubs just to get laid. Pickup master 5000!