Eggs are items that can be found throughout both Resident Evil 4 and Resident Evil 5 and come in a few different types. In both games, eggs can either be eaten for health recovery or thrown as weapons.
There are few times Eggs can be found and picked up off the map, but otherwise they are found by killing snakes which drop them, or randomly lain by chickens. There are four different types of eggs, from most common to rare, there are White, Brown, Gold, and Rotten. In the Mercenaries games, Chickens will also drop eggs when killed.
Resident Evil 4
In Resident Evil 4, all eggs take up 1 space in the attache case. When equipped in the Inventory Menu, Leon will playfully throw the egg up and down in one hand. They are not deadly when used as weapons, hitting a Ganado can cause them to flinch or be stunned. Inflicting any sort of damage to an egg before picking it up will cause it to break and be irretrievable.
Resident Evil 4 Egg info
"Restores health by a small degree."
About 1 & 3/4 bars
Brown Chicken Egg
"Restores partial health."
About 3 & 1/4 bars
Gold Chicken Egg
"Completely restores health."
Resident Evil 5
In Resident Evil 5, Eggs are organized in stacks of 5 of one kind, stored in one space in the inventory system. Gold, White, and Brown eggs have a chance of stunning an enemy when thrown at them and do 300 damage each, Rotten eggs will kill regular Majinis and prevent plaga spawns no matter how much health they have.
Eggs can only heal the person using them, unlike herbs and sprays which can heal both characters. Throwing eggs at your partner will stun him/her if Friendly Fire is on. Eating Rotten Eggs will cause damage, on Professional mode, they will send the player straight into DYING mode.
Killing a Majini with an egg unlocks the "Egg on your Face" award and collecting all four kinds of eggs unlocks the "Egg Hunt" award.
Resident Evil 5 Egg info
"An ordinary egg. It can be used as a weapon."
"An brown egg. It's worth more than an ordinary egg."
"An extremely rare golden egg. It will fetch a high price in certain markets and is highly coveted."
"This egg is completely rotten. It's turned black. It's not edible at all."
In Resident Evil 5, there is a "Rotten Egg exploit" (both systems work), where when one player gives a rotten egg via online play. The person who received the egg can quit the game and save. The person who gave the egg cannot. You can keep doing this to get all your inventory spaces filled. Once sold, a full inventory of rotten eggs can be sold for 90,000 money. Also works Offline via Split Screen mode, but requires two gamertags on the same console.