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A possible issue of contention that my friend has raised that I do not recall in 28 Days Later, is he claims, that at one point one of the characters enters a church and the Infected are eating someone or each other. I do remember though that the 'experts' in the military complex said they would eventually die of starvation. I sought biological evidence in that as soon as they would attempt to eat someone, seconds later they would become another one of the infected, and they don't apparently eat each other.

1).I don't know about this type of stuff on zombies.

2).No zombies do not sweat or have to excrete waste,any liquids go into their blood that just adds to it when they bite you(I think).I don't know if the Kidneys and liver filter stuff.

3)Yes zombies do breath but they cannot die by drowning,breathing must be a human function that they just can't get rid off.

4)Yes the virus does negate the need of sleep or rest.Mainly because of the lust for blood

5)Same answer as number 4

6)They use smell,sight,sound,taste and vibrations in the earth.

7)Some types of zombies keep their memory from their human life but only small bits of it.

cool Some animals can transfer and some can't,i can't remember which can and can't.

9)I think it stays with the victim for ever until they decompose,Rats and other things like that don't get the virus as i remember.

10)The one in 28 days/weeks later is passed by the zombies blood getting into you'r system,in most movies its passed by Bite.

All of these questions are answered in the book for which this guild was created. You should check it out. I got it off of Amazon for about $10 (USD) with World War Z for about $13 (USD).


Otherwise, I'll try to answer your questions without botching them too much.

Zombies do not require any nourishment from their victims, and the flesh found inside dissected zombies is never actually in any state of digestion aside from the eventual rotting of the non infected meat. The meat is often pushed through the body of the zombie as it consumes more and exits the body in relatively the same state in which it entered.

Zombies do not need food or even air. They can live (if you could call it that) under water for years, or until they eventually deteriorate completely. They do not breathe and the only recorded use of the lungs is in response to prey known to us as moaning or howling.

The zombie is essentially a reanimated corpse. The Virus known as Solanum (which is what creates the zombie) attacks the nervous system through the blood stream and settles in the brain where it shuts down all functions required for life but maintains the nervous system to allow movement.

Technically the creatures in the 28 series are not zombies because they are not dead and maintain the capability of dying. The body still functions and requires nourishment to sustain life. Regardless of the fact that they feed on human flesh, they are not zombies.

I would continue, but time is short. In closing, read the book. Your questions will be answered.

1.) They do not suffer from Dehydration because there is no blood flow in their veins. They do not get overheated, so that basically negates almost every use for water in the system.

2.) ((This answer is a bit graphic.)) Zombies do not digest, as every cell in their body is dead, ((Apart from the Virus)), and the enzymes that normally help digest food are dead as well. Therefore, everything eaten will sit in their stomach for as long as they exist. In some more extreme cases, a Zombie will continue to eat to the point the stomach can no longer contain any more, and the stomach will rupture, or
more gruesomely, the undigested food will burst out the a**s, and then continue eating. ((Sick image. I know.))

3.) Zombies do in fact breathe, but they do not require air to function. You can tell this because of the moans you would hear coming from them when they are in "Hunt Mode". If the Zombie found itself incapable of breathing, it would not stop functioning, as the Virus has found a way to negate all needs for air. ((It's been debated whether a Zombie is a more advanced form of Humans, as the Virus enhances all 5 senses to a near superhuman level, and negates the use of nearly all resources a Human needs to survive.)) To my knowledge, they use Aerobic Respiration.

4.) Zombies do not sleep. Neither do they repair muscle damage, suffer from hysteria, or even suffer from fatigue. A Zombie will keep coming at you until it's arms literally fall off from lack of muscle repair. ((This would be extremely rare, but it is possible.)) The virus, yet again, negates the need for a necessary human function.

5.) You've stumped me. I really don't have an answer for why, I just know that they don't get tired. Muscle damage was explained in number 4. Breathing was explained in 3. The only reason I can think they don't get tired, is because they do not feel anything. The only thing the Zombies feel is the primal instinct to feed.

6.) The dead rely on the senses of smell and hearing as their most dominant senses. This being said, the Virus ((Once fully taking over a Human body system)) releases a Pheremone that helps other Zombies distinguish the living from those infected. However, they can and will rely on other senses if the sense of smell fails. ((Nose/Ears could fall off.. They are decaying after all.))

7.) The dead do not have memories. Say, your mother was bitten, and she turns. She is no longer your mother, she's yet another undead, shambling corpse walking the post-apocalyptic Earth. She will not stop and think you are her offspring, she will not remember all the times you spent together, she will focus on one thing and one thing only. The need to feed.
That being said, 28 Days/Weeks Later, you have to remember, aren't real zombies. They are infected with the Rage Virus, and are more intent on inflicting harm than to feeding. ((Watch the scene with the mother of the children getting killed, it will become clear. The infected concentrates more on killing than feeding/infecting.))

8.) As said by Max Brooks, the undead do not feed on anything but Human flesh. That means that there will never be a Zombie Dog. Even if, say a Vulture, eats off an infected corpse, the Vulture will die, and remain dead. Undead tissue has a fatal Neurotoxin that will kill the brain if eaten, and not reanimate it.

9.) The virus takes about 20 hours to kill the individual infected, and about 4 hours to reanimate the corpse. The Virus will remain active as long as the brain isn't horribly damaged, and the Spinal Cord is attached to the Cerebellum. Again, reanimated animals are not possible.

10.) It is not known whether there is someone out there with resistance to the Virus. You have to remember, it is a Virus, and the medical technology of today has absolutely no way to kill a Virus, and even trying to create a Vaccine will result in the individual turning into a Zombie. ((Even the most minute amount of the Virus induced into the Human body will result in death, and reanimation.))

Hope I helped. 3nodding

I'd like to add some more information that wasn't asked in your post.

I was wondering about some of these questions myself. I could answer these questions if they were about zombies, but since you're talking about living Rage infected, I'll take a shot at some of these questions.
2.) The virus could slow down metabolism so they don't excrete as much wastes?
4.) Maybe the infected do not sleep as we do.
7.) They probably retain memory because in 28 Weeks later you have the dad stalking the two kids.
8.) The virus most likely infects humanoid animals. Chimps share a lot of the DNA that we do, this is why HIV spread over to humans.
9.)The virus probably lasts as long as the virus does in zombies. Until the carrier is burned. The Rage Virus probably didn't spread over to the rats because they are not as closely related to us as the chimps are.
It's a movie so it's hard to know for sure. Books tend to be more detailed, try the Morningstar saga, they have similar infected in those books.