Bestiary

Bestiary is a feature that rewards the player with XP and. Upgrading a mob collection will reward the player with extra, chance for multiple , and  when fighting that mob. Bestiary levels are gained by increasing your milestone. You can collect rewards from the wolf at spiders den.

Access
Players can access this menu with /bestiary, /be or by going to the Combat Skill, where the icon is located at the bottom of the menu, above the "Go Back" and "Close" buttons.

Milestones
Milestones are earned by achieving a new mob collection tier. Each milestone will give you and for every 2 new milestones you will get some  XP. At Bestiary XX you will earn 1 million combat XP and 2 million at Bestiary XXV(4.6m total by the time you reach Bestiary XXV).

Levelling Rewards
When you kill a mob, you will unlock its collection. Upon reaching certain levels in the collection, you will unlock information about that mob's loot tables, by rarity. You can still earn drops for any tier, regardless if the info is unlocked in the Bestiary.

NOTE: Not all mobs have all rarities of loot. The table below shows which Rarity of loot is unlocked at which level of collection.

Each level also gives you chance for double. Anything above 100% gives a chance for triple drops, anything above 200% gives a chance for quadruple drops, etc.

Collection Level Kill Count
The "Bosses" table apply to the Brood Mother, Arachne, Magma Cube Boss, Endstone Protector, Ender Dragon, and the Headless Horseman.

!Level !Kills !Total !Level !Kills !Total
 * -|Generic={| class="wikitable"
 * 1
 * 10
 * 10
 * 2
 * 15
 * 25
 * 3
 * 75
 * 100
 * 4
 * 150
 * 250
 * 5
 * 250
 * 500
 * 6
 * 500
 * 1,000
 * 7
 * 1,500
 * 2,500
 * 8
 * 2,500
 * 5,000
 * 9
 * 5,000
 * 10,000
 * 10
 * 15,000
 * 25,000
 * 11
 * 25,000
 * 50,000
 * 12
 * 50,000
 * 100,000
 * 13
 * 100,000
 * 200,000
 * 14
 * 100,000
 * 300,000
 * 15
 * 100,000
 * 400,000
 * }
 * -|Bosses={| class="wikitable"
 * 100,000
 * 13
 * 100,000
 * 200,000
 * 14
 * 100,000
 * 300,000
 * 15
 * 100,000
 * 400,000
 * }
 * -|Bosses={| class="wikitable"
 * 400,000
 * }
 * -|Bosses={| class="wikitable"
 * 1
 * 2
 * 2
 * 2
 * 3
 * 5
 * 3
 * 5
 * 10
 * 4
 * 10
 * 20
 * 5
 * 10
 * 30
 * 6
 * 20
 * 50
 * 7
 * 25
 * 75
 * 8
 * 25
 * 100
 * 9
 * 50
 * 150
 * 10
 * 50
 * 200
 * 11
 * 50
 * 250
 * 12
 * 50
 * 300
 * 13+
 * 100 for each level
 * $$300+100(x-12)$$ $x$:bestiary level
 * }
 * 11
 * 50
 * 250
 * 12
 * 50
 * 300
 * 13+
 * 100 for each level
 * $$300+100(x-12)$$ $x$:bestiary level
 * }
 * 100 for each level
 * $$300+100(x-12)$$ $x$:bestiary level
 * }

Trivia
When opening hovering over the menu, it says: "The Bestiary is a compendium of mobs in SkyBlock. It contains detailed information on loot, drops, your mob stats, and more! Kill mobs within Families to progress and earn rewards, including bonuses toward mobs in the family."

As of right now, there are 81 different families to find. The families are categorized by the different groups, the groups are Private Island mobs, Hub Island mobs, Spider's Den mobs, Blazing Fortress mobs, The End mobs, Deep Caverns mobs, The Park mobs, Spooky Festival mobs, and  Dungeon mobs.