No, an unarmed human being could not beat a gorilla in a fight. Simply put, gorillas are far too strong for human beings to overcome.
Remain calm and lay low.
A gorilla is faster than most humans and running away will only encourage it to chase after you. Remaining calm and laying low will calm the primate down and stop seeing you as a threat or challenger. Gorillas never continue an attack if you stay calm and act submissive.
Walk away steadily: When the gorilla is charged, you are advised not to run away because the gorilla will run after you and attack you rather you are advised to create distance between you and the gorilla without making sudden movements, step back slowly and get off the scene.
To Mountain Gorillas, anyone who keeps a direct eye contact is a challenger and an enemy who has come to disrupt the family. Direct eye contact will, therefore, trigger the silverback to charge and fight you in defense of his family. If you want peace with Gorillas, therefore, avoid direct eye contact.
Predators. Leopards and crocodiles are large carnivores which may prey upon gorillas. Humans are the greatest threat to all gorilla populations.
Certain reptiles such as chameleons and caterpillars are what are gorillas scared/afraid of. They are also afraid of water and will cross streams only if they can do so without getting wet, such as by crossing over fallen logs, and dislike rain.
Although smiling is often associated with submissive or non-aggressive behavior in gorillas, eye contact is a practice that is discouraged by primatologists, as apes are likely to interpret eye contact as a challenge or a form of aggressive display.
Highly unlikely, if no firearms or tranquilizer guns are involved. A gorilla can reach speeds of 20 mph to 25 mph. In comparison, Usain Bolt's record in the 100-meter dash roughly translates into 23 mph (Bolt reaches peak speeds of around 27 mph—but still).
A lion would almost certainly win in a fight against a gorilla. The reasoning should not be all that surprising. A lion will stalk and ambush a gorilla in the dense vegetation of their natural habitat by waiting until it's dark to have the edge. They have a good chance at ending the fight in seconds.
The only predator to prey on gorillas is the leopard. Walter Baumgärtel found the remains of several gorillas after they had been killed by leopards in the Virunga Volcanoes. Another case has been confirmed in Gabon, where a sick young gorilla was killed by a leopard.
Severe aggression is rare in stable gorilla groups, but when two groups meet, the leading silverbacks can sometimes engage in a fight to the death, mainly using their sharp canines to cause deep, gaping injuries.
How hard can a gorilla punch? It is believed that a gorilla punch is strong enough to shatter your skull with one slam of its arm:/Between 1300 to 2700 pounds of force. Gorillas on (avg. 400 lbs) have a muscle mass density almost 4 times higher than the most heavily muscled powerful human you know.
Due to the Polar bear's superior size and strength, it is the world's largest and most powerful land carnivore. The polar bear would almost certainly kill the gorilla if the two ever met.
Besides being gentle and calm, gorillas are wild animals that can truly be dangerous if handled carelessly or threatened. In fact, gorilla attacks on human in the wild are very rare and usually motivated by a defensive instinct. A gorilla that thinks it is in danger will first make threat display noted above.
Mountain Gorillas often beat their chests whenever they perceive a threat or danger. When the chest beatings occur, it indicates that the Gorilla is charging at a human or any rival. This is one of the warning signs that a Gorilla is definitely going to attack if you don't stay away from its territory.
The emanating drumming sound can be heard over one kilometre away. The presumed function of gorilla chest beats is to attract females and intimidate rival males.
Though they are often portrayed as dangerous and aggressive, the truth is that gorillas are gentle giants. They are shy and retiring by nature, and usually only become aggressive when they feel threatened.
A tiger would kill a gorilla in a fight. If a tiger managed to ambush a gorilla, the tiger would immediately kill it. Although the gorilla is strong, the fact is that it could not stop 600 pounds of charging muscle and teeth.
A gorilla would win a fight against a kangaroo.
The gorilla has the weight and power to overwhelm the lighter creature completely. It would use all its weight and power to topple the kangaroo in a bout of extreme violence.
If a gorilla moves closer to you, you stay still and let him pass by. If you happen to be standing exactly where a gorilla wants to be, just give him the space and let him move as he likes. If the gorilla approaches you and then sits down, you should slowly move away to resume the 7-meter distance.
The gorilla's only natural predator is the leopard, and even they very rarely actively hunt juvenile gorillas. Crocodiles and anacondas share a habitat with them and can be deadly to gorillas, but these attacks only occur on rare occasions. The most dangerous animal for the gorilla is unfortunately the human.
A crocodile would win a fight against a gorilla. Most of the fights would begin in or near water, and a gorilla doesn't stand a chance in that scenario. If a crocodile bit and dragged the gorilla into the water, then it's a simple victory.
Although a silverback gorilla is very fast, quite strong, and has a longer arm span, it is unlikely that a silverback could defeat the much larger and faster grizzly bear in a fair fight. The one advantage that a Silverback might have is in the enormous strength of its muscles.