Most expert analyses and comparisons conclude that a grizzly bear would likely win in a fight against a silverback gorilla due to several key advantages:

• Size and Weight : Grizzly bears are significantly larger and heavier, often weighing between 700 to 800 pounds or more, compared to gorillas which average around 300 to 485 pounds. Bears can stand about 8 feet tall on their hind legs, dwarfing the gorilla's 6-foot height

• Strength and Weaponry : While gorillas are incredibly strong—estimated to be 4 to 9 times stronger than humans and capable of lifting close to ten times their body weight—they lack natural weapons like claws. Grizzlies have powerful claws (up to 4 inches long) and a strong bite force, which are lethal advantages in combat

• Aggression and Combat Experience : Grizzlies are natural hunters and have experience fighting other animals, whereas gorillas are mostly herbivores and tend to be peaceful, fighting mainly for defense. This gives bears an edge in instinct and aggression during a fight

• Durability : Bears have thick fur and loose skin that can make it difficult for opponents to inflict deep wounds, whereas gorillas bleed more easily from cuts, making them more vulnerable to the bear’s claws and bites

• Speed and Reach : Bears can run up to 30-35 mph, faster than gorillas’ 20 mph, and their longer reach allows them to strike at vital areas like the neck and chest more effectively

That said, gorillas have advantages in agility, manual dexterity, and raw muscle strength, which could allow them to deliver powerful blows and potentially injure a bear if they can avoid the initial deadly strikes. Some analyses suggest that if the gorilla attacks first and targets vulnerable areas quickly, it might stand a chance

. Overall, the consensus is that the grizzly bear’s size, weaponry, aggression, and combat experience make it the likely winner in a direct encounter with a gorilla, although the fight would be intense and not entirely one-sided