Usually they are being abused or not cared for well.
Gorillas are not typically aggressive animals. They are known to be peaceful and social creatures, but can become aggressive if they feel threatened or are protecting their young. It's important to respect their space and observe them from a safe distance in the wild.
This is a rare case; they are very loyal animals and are never aggressive towards their owners. If the dog is aggressive towards the master, it means the behavior of the master is annoying and want them to stop the act immediately. The aggressive behavior is shown while feeding them that is when you stop them from eating their food or if you do not supply the food properly. Aniitaaaaaa :)
Jaguars are solitary and elusive animals, but they can be aggressive if they feel threatened or if they are defending their territory or young. They are known for their powerful jaws and are capable of taking down large prey with a single bite.
Mallard ducks are generally peaceful birds that interact with a variety of other animals in their environment. They are known to coexist with other waterfowl species, such as geese and swans, as well as with other small animals like fish and insects. However, they may become aggressive towards other ducks or animals if they feel threatened or perceive them as a competition for resources.
i hope someone puts a better answer then i am about to :P as my wording may be a bit off yes and no rabbits are usually inquisitive and social creatures but they can get aggressive if provoked or for a number of other reasons such as being in pain or sick etc the concept that rabbits are complete cowards is a misnomer
aggressive animals
Gorillas are not typically aggressive animals. They are known to be peaceful and social creatures, but can become aggressive if they feel threatened or are protecting their young. It's important to respect their space and observe them from a safe distance in the wild.
Overall, although some dogs who are not raised correctly can become aggressive, dogs are actually very friendly animals.
No elephants do not have to be scared. These animals are rather peaceful but are known to startle and scare easily and become aggressive.
The animal will become aggressive, fear humans, die or all of the above.
Why animals are aggressive towards each other is usually for dominance and like that is their territory not your territory.
Not necessarily. They will still be aggressive to other animals because of their territory and they may not stop being aggressive.
Cockatiels do not become aggressive unless they are treated badly.
They are aggressive at hatching and stay that way for their whole lives. They are VERY AGGRESSIVE when they are breeding.
Mules are not typically aggressive animals. They are known for being intelligent, sure-footed, and hardworking, but they can exhibit stubborn behavior at times. With proper training and handling, mules can be gentle and reliable animals.
Possibly
Being kept in a cage can mentally effect zoo animals negatively. They can become depressed, or even aggressive. In some cases they can begin to exhibit odd behaviors that are not natural to them.