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.

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 yield bones if they derived from creatures that drop bones. These include Zombies, Undead chickens, and Undead cows. However, if the creature was transformed in some way upon dying and becoming undead, it may have other or no remains. Most or all ghostly creatures, including ghosts themselves and Revenants, do not have bone remains.

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.

Creatures without remains
Most if not all creatures with exoskeletons do not have remains. This includes most spiders (such as Deadly red spiders), ants (such as Giant ant workers, and so on. (Technically, it includes most arthropods, such as insects, arachnids, etc.

Vampyre juveniles and Vampyre juvinates in effect do not have remains. They can die when a Guthix balance potion 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. Shades do (see below).

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.

Trivia

 * An Oyster is an item, not a creature. You can, however, end up with an Empty oyster from it, which could be considered to be a form of remains.