The answer to this question depends entirely on the type of zombie you're imagining. In popular culture, zombies are often depicted as mindless, flesh-eating creatures with an insatiable hunger.
The "Classic" Zombie
- The "classic" zombie, as seen in movies like Night of the Living Dead, is often portrayed as being driven by an insatiable hunger for human flesh. This type of zombie would likely die fairly quickly without consuming any food. They are often depicted as being physically weak and slow, relying on their numbers to overwhelm their prey.
The "Fast" Zombie
- "Fast" zombies, popularized in films like 28 Days Later, are much more agile and aggressive. These zombies are often depicted as being more intelligent and capable of complex actions. While they still need to consume flesh to survive, they are likely to be able to last longer without eating. They are typically depicted as being driven by a primal instinct to spread the infection, rather than simply hunger.
The "Undead" Zombie
- There are also more supernatural interpretations of zombies, often seen in fantasy and horror novels. These zombies are often depicted as being undead creatures that are not truly living, but also not truly dead. They may not need to consume flesh to survive, but they may still be driven by a desire to feed. They are often depicted as being more powerful and resilient than their "classic" counterparts.
Ultimately, the answer to the question of how long a zombie can last without eating depends on the specific characteristics of the zombie in question. There is no single, definitive answer.