Remains

Many creatures, when killed, always drop their Remains. This includes both monsters and players. The kind of remains a creatures drops depends upon the type of creature it is.

Creatures with bone remains
Many living and some undead creatures drop some form of bones, such as regular Bones, Big bones, Dragon bones, etc. Creatures that drop bones include mammals (such as Humans), birds (such as Chickens), reptiles (such as Snakes), and amphibians (such as Frogs).

Most if not all humanoid giants drop bones (big bones), even if they might be considered in other categories of creatures. For example, many fire-based creatures drop ashes, but Fire giants drop big bones.

Fish presumably would drop bones if players could fight them. Instead, fish are caught using Fishing, yielding raw fish and cooked using Cooking, yielding cooked fish. Cooked fish can be eaten but yield no bones upon consumption.

Some undead monsters drop bones if they derived from creatures that drop bones. These include Zombies, Undead chickens, Undead cows, Crawling Hands, Skeletal hands, and Zombie hands. However, if the creature was transformed in some way when it became undead, it may have other or no remains. For example, most or all ghostly creatures, including ghosts themselves and Revenants, do not have bone remains.

Semi-huanmoid Scabarites drop bones, even though their insect-like appearance suggests they should drop nothing, like real insects (see Creatures without remains below). These include: Locust lancers, Locust rangers, Locust riders, Scabaras lancers, Scabaras locusts, Scabaras mages, and Scabaras rangers. (Insectoid Assassins in the Smoking Kills quest are Scabarites but are reported to drop nothing. The assassins were converted from following Scabaras to obeying Amascut.) Insectoid Scabarites (Small scarabs, the Giant scarab, and Scarab swarms) have no remains.

Giant Rock Crabs drop bones, even though other exoskeleton-based creatures do not, including regular Rock crabs.

Various creatures drops bones that are characteristic of that creature:
 * Jogres drop Jogre bones.
 * Monkeys drop Monkey bones, Monkey bones (large), or Monkey bones (Zombie).
 * Monkey Guards drop Monkey bones (large).
 * Zombie monkeys drop Monkey bones (Zombie).
 * Wolves drop Wolf bones.
 * Bats and Giant bats drop Bat bones.
 * Zogres drop Zogre bones.
 * The Shaikahan drops Shaikahan bones.
 * Adult Chromatic dragons drop Dragon bones.
 * Baby chromatic dragons drop Babydragon bones.
 * Ourgs drop Ourg bones. (Although few ourgs can be found at present, General Graardor is an ourg, and Slash Bash might be an undead ourg.)
 * Skeletal Wyverns drop Wyvern bones.
 * Dagannoth Rex, Dagannoth Prime, and Dagannoth Supreme drop Dagannoth bones. (Other Dagannoth drop ordinary bones.)

Creatures with ash remains
Most if not all Demons drop Ashes. Indeed, a drop of ashes is the best sign that the creature a player just fought was a demon, whether it was an Imp or the mighty K'ril Tsutsaroth. The Revenant demon is a ghostly creature and does not have remains.

Many non-demonic, fire-based creatures drop ashes, such as Pyrefiends and Fire Elementals. (Fire giants, however, drop big bones.) At least some energy-based creatures also drop ashes, such as Killerwatts.

Zygomites, a mutated fungus found in Zanaris, drop ashes.

Creatures without remains
Most creatures with exoskeletons do not have remains. This includes spiders (such as Deadly red spiders), insects (such as Giant ant workers and Cave bugs), Flesh crawlers, all Kalphites, and so on. (Technically, it includes most or all arthropods, such as insects, arachnids, etc.) Some exceptions are:
 * Jungle spiders on Karamja drop Spider carcasses. A carcass can be cooked to become a Spider on stick, a food item, so spider carcasses can be considered a food source like raw fish or raw meat rather than remains.
 * Many Scabarites, despite their insect-like appearance, drop bones (see Creatures with bone remains above) while some have no remains.
 * Giant rock crabs drop bones.

Most if not all fleshy, slug-like creatures do not have remains, like Cave crawlers and Rockslugs.

Water- or ice-based creatures typically do not drop remains. This includes Ice warriors and Icefiends. (Ice giants, however, drop big bones.)

Vampyre juveniles and Vampyre juvinates in effect do not have remains. They can die when a Guthix balance potion is used on them at the right time, leaving no remains. (The potion can also cure the vampyre, returning it to human form, or anger it, making it a stronger vampyre that still has no remains). If a potion is not used on a vampyre, when it takes sufficient damage it will turn into a cloud of mist and escape.

Most ghostly creatures do not have remains, such as Ghosts, Banshees, Aberrant spectres, Shadow warriors, etc. Shades, however, do have remains (see Creatures with other remains below).

All TzHaar creatures do not have remains.

Other creatures without remains:
 * Jellies, gelatinous Slayer creatures.
 * Gargoyles. These are slayer monsters killed with a Rock hammer and apparently disintegrate totally when slain.
 * Wall beasts. Their appearance suggests they should drop bones. Since the bulk of their bodies are hidden behind walls, it may be that their remains would not be accessible to players.

Creatures with other remains

 * Vampires drop Vampire dust.
 * Vyrewatch drop Vyre corpses.
 * Shade creatures drop remains. Loar shades drop Loar remains, Asyn shades drop Asyn remains, and so on for Phrin shades, Fiyr shades, and Riyl shades.
 * Snails, such as Myre blamish snails or Giant Snails, always drop shells. Perhaps all mollusks with shells do, but this is not confirmed.
 * Metal dragons drop metal bars of their metal.

Trivia

 * An Oyster is an item you obtain from fishing, not a creature you can fight. You can, however, end up with an Empty oyster from it, which could be considered to be a form of remains. (Oysters are mollusks, and shelled mollusk-based monsters like snails drop shells.)
 * Bloodvelds are called "demonic" by Slayer Masters, but they drop bones, not ashes.
 * During the Rum Deal quest only, a Fever Spider will drop a Fever spider body, an ingredient used in making Captain Braindeath's 'rum'. Also during this quest, the player will fight an Evil Spirit, which drops ashes despite seeming to be a ghostly creature.
 * As mentioned above, Giant Rock Crabs drop bones, even though other exoskeleton-based creatures do not, including regular Rock crabs. This might be a mistake by Jagex, or there may be some unknown, physical or magical reason for their having bones.
 * Some creatures occasionally drop multiple bones, like bloodvelds which occasionally can drop several bones and big bones, even though they always at least just drop one set of bones. In these cases, it can be regarded that the creature was 'carrying' the extra bones, just like the other, non-bone items it may drop when killed.