Unlike the Venom symbiote, the original Anti-Venom symbiote does not have a mind of its own, but it can detect illnesses or toxins within people and heal them. Ever since Anti-Venom tried to use this power on Peter Parker, the symbiote also interferes with Spider-Man's abilities whenever they're near each other.
In Marvel Comics, does Venom have healing factors like Carnage's? If so, how powerful is it and what are its limits? Yes, Venom has a healing factor! He can heal both himself and his host from moderate to severe damage.
According to symbiote biology it would be The All-Black, also known as The Necrosword. Due to being the first symbiote knull ever made, it's already weak as it is, only granting the basic suit and itself as a weapon.
Venom came to empathize with Eddie's status as a "loser", eventually deciding to turn on its own kind and save the Earth from being invaded. The symbiote ultimately agreed to work alongside Eddie as a vigilante, to only hurt bad people despite its own confusion of how it can tell the difference of who is good or bad.
Carnage showcases his most extreme healing factor yet, demonstrating his status as one of the toughest villains in comics. The Carnage symbiote's regenerative abilities are taken to absurd lengths, allowing it to recreate Cletus Kasady from scratch.
Pain level 4 is the highest level in the Schmidt sting pain index. Schmidt's original index rated only one such example, the sting of the bullet ant, as a 4.
Venom has the power to heal himself, which makes him a worthy foe, even to Spider-Man. But more than that, he has the power to heal and regenerate his host. This allowed him to heal Flash from being impaled, and for Eddie Brock, it meant he could heal and regenerate to slow or cure his cancer.
Taking control of him, the symbiote fed off his life force until it encountered the Hulk mid-battle with Doctor Strange and the Avengers. Sensing his power, the symbiote abandoned Peter for the Hulk -- gaining control of the Hulk while leaving a withered and aged Spider-Man on the verge of death.
The hierarchy of symbiote colors is now established, with red symbiotes being naturally stronger than black ones. The white Anti-Venom is considered one of the strongest symbiotes, further solidifying the hierarchy and establishing its position at the top.
As you may recall from the first Venom movie, the symbiote was unable to bond with numerous people and left each of its test hosts dead. It wasn't until Venom formed a special bond with Eddie that both the host and symbiote were able to survive.
Extremely loud sounds (or extremely high frequency sound waves) can shock the symbiote, and even cause him to separate from his host. Spider-Man discovered this not long after meeting Venom.
While coming close to killing Spider-Man numerous times in battles since their initial encounter, Venom also began to act as an antihero of sorts, hunting down and often killing people it believed to be guilty, while attempting to protect those in danger.
Venom is not the only powerful symbiote that has been introduced in the Marvel Universe, and there are a few who challenge his claim as the strongest. Venom has been paying dividends for Marvel for a long time now.
The black mamba, for example, injects up to 12 times the lethal dose for humans in each bite and may bite as many as 12 times in a single attack. This mamba has the fastest-acting venom of any snake, but humans are much larger than its usual prey so it still takes 20 minutes for you to die.
As a result, Carnage is far more violent, powerful, and deadly than Venom. Kasady and the symbiote would then be a main antagonist in "Maximum Carnage" and Kasady would continually be the most recurring character to use the Carnage symbiote in many publications.
By eating Carnage, Venom is effectively returning his spawn back to his former "unborn" state within Venom's mass, not taking anything he didn't already have into his cells.
While the Carnage symbiote was assumed to be deceased following Cletus' first defeat at the hands of Spider-Man and Venom, it survived due to its uniquely strong bond with its host - which enabled it to regenerate within Cletus' bloodstream.
In a flashback, it is revealed that she got pregnant with Eddie's child after bonding to Venom. After giving birth to their son Dylan, she left him in the care of Carl Brock, with the promise that she would return eventually. She instead committed suicide, after which Carl raised Dylan.
Basically, the symbiote didn't attempted to talk with Peter because it wanted to remain loyal and obedient like a servant. It didn't felt the need to talk to him, only to serve him.
Like in Spider man 3 after Peter ripped the Symbiote off of Brock, it gravitated towards Peter over Brock. Another is in Spectacular Spider man cartoon where the Symbiote easily rejected Brock in favor of Spiderman when he wanted it back.
