Ganodermic beasts are monsters requiring a Slayer level of 95 to kill. They are found at the bottom of the Polypore Dungeon. (this includes the Agility and resource section) Players cannot receive these as a Slayer task if their Magic level is below 60.
Ganodermic beasts are the only droppers of the ganodermic gloves/boots and polypore stick. They also have a good chance of dropping items from the Rare Drop Table due to their high slayer and combat level.
This monster has the highest Slayer requirement outside of Dungeoneering, breaking the previous record holder, ice strykewyrms.
When the ganodermic beasts were released in November 2011, you could easily make over 15 million coins per hour killing them. After an initial correction in prices one can still make 1-1.5M per hour from flake and seed drops.
When they attack, the largest four orange circles on its back disappear. Their attack also seems to go in an arc, similar to most of the monsters in the Polypore Dungeon.
After the Evolution of Combat update, ganodermic beasts had a high kill per hour rate, too high, for their level that Jagex added a hotfix that they dropped Cabbages and 3-5 coins as an extremely common drop to prevent players from gaining massive amounts of profit from easily obtainable flakes and seeds.
Their hp has since been buffed up and the cabbage drops removed.
As with all Polypore monsters, a hidden update buffed the damage of the infestation due to players that would use the infestation to be dealt with pre-EOC infestation damage. The exact amount of damage is unknown, but is most likely to range from 120-190.
Sometimes when cannoning ganodermic beasts, they will attempt to get close to the player. However, there are cases when they may be unable to move from a invisible boundary, despite having a long wander/aggression range. This might be a glitch.
Ganodermic beasts used to be the highest level monster in the Polypore Dungeon. This is no longer true as of the Evolution of Combat update as they now share the same combat level with Ganodermic runts .
If a ganodermic beast is attacked, but the player is not within the minimap range of the beast, they will do nothing, even if they are attacked again. The same also appears to happen with the ganodermic runts and may be a glitch.
There was a glitch causing the ganodermic beasts to become aggressive towards players. This has since be fixed.