Polar Bear Cubs: Denning, Birth, and the First Year of Life
Polar bear cubs are born at 500-700 g inside a snow den while their mother has fasted for months. Here is how they survive the first Arctic year.
April 2026
December 2024
Panda Cubs: From 100 Grams to 100 Kilograms in Two Years
Panda cubs weigh 85-130 g at birth, one of the smallest mother-to-cub ratios in mammals. Here is how they grow from pink blind newborn to independent adult.
November 2024
Grizzly Bear Cubs and Family Dynamics: An In-Depth Look
Grizzly cubs weigh 400-500 g at birth inside a winter den. The first 3 years of life, the mother-cub bond, and why male infanticide shapes family survival.
Brown Bear Cubs: Winter Births and Maternal Bonds
Brown bear cubs weigh 350-500 g at birth mid-hibernation. The mother-cub bond, infanticide risk from boars, and how maternal care shapes survival.
Sun Bears: Cubs, Mothers, and Their Unique Bond
Sun bear cubs are born at 250-325 g in tree hollow dens. The reproduction cycle, the 18-month maternal bond, and the orphan-cub pet-trade crisis.
Spectacled Bear Comparison: Relatives and Species
Spectacled bear cubs are born at 300-400 g in caves or hollow trees. The mating cycle, the cub-rearing year, and how Andean conditions shape family life.
October 2024
Bonding Between Black Bear Cubs and Mothers in Dens
Black bear cubs are born at 200-450 g inside winter dens, then bond with mom for 1.5-2 years. The biology, the cubs of color, and how mothers defend them.