The description says one of the authors has accidentally erased the description.
Fortunately; I happened to have a copy of the description down in my notepad.
I might have modified it a little for spacing purposes though.

===Koalefanta Proboscidea===

The mod has been changed to be compatible with Reign of Giants DLC only.
A new item Moondust working as fireworks produce flashing lights, this effect can be turned off in the mod's config menu.
The mod gives you six special koalefants you can discover in your lands by following their footprints.
Each of them are different in appearance and in personality.
Dirtpiles of Special Koalefants have green hue in the smoke however you can still find Varg by the end of the trails.

Information of the koalefants:

Feathered Koalefant:
Periodically drops: Crimson feathers and jet feathers
Loot on death: 2 meat, 3 jet feathers, 4 crimson feathers, 2 azure feathers
Health: 350
Extra: Coward, spawns birds every second day
Hunt: Spring
Trunk loot on death:Eaten raw makes the player run faster 180 seconds.
Hunger:+10 Health: +8 Sanity: -20
Spoil time: 10 days

Forest Koalefant:
Periodically drops: Crop seeds
Loot on death: 2 leafy meat, 2 fireflies, 3 forest seeds
Forest Seeds can grow into any random forest plant when planted.
Health: 550
Extra: After finding a Forest Koalefant there is a chance of a Firefly to spawn in your world. The flower will slowly attract fireflies after it has been fertilised. Can not be replanted.
Hunt: Autumn
Trunk loot on death: Eaten raw makes nature grow over a large area.
Hunger:-33 Health: +8 Sanity: -15
Spoil time: 10 days

Rocky Koalefant:
Periodically drops: Rocks, flints, marble, nitre
Loot on death: 2 meat, 6 rocks, 3 marbles
Health: 800
Extra: Aggressive towards player, pigmen and monsters
Hunt: Summer
Trunk loot on death:Eaten raw casts a shield around you that reduces damage by 50% for 60 seconds.
Hunger:+10 Health: +8 Sanity: -33
Spoil time: 15 days

Frost Koalefant:
Periodically drops: Ice, Frost Stone
Frost Stone will burn with cold flame when placed on ground.
Loot on death: 2 meat, 2 Frost stones and 4 ice
Health: 700
Extra: Sleeps every two days. Has a cold aura while sleeping.
Hunt: Winter
Trunk loot on death: Eaten raw freezes all living things over large area.
Hunger:+10 Health: +8 Sanity: -20
Spoil time: 15 days

Nightmare Koalefant:
Periodically drops: Evil flowers and Nightmare Crystals
Nightmare Crystals can be used to fuel Night Light and fertilise plants.
Loot on death: 2 monster meat, 4 nightmare crystals and 3 nightmare fuel
Health: 700
Extra: Have a sanity draining aura. Attacks player when they are insane. Nocturnal.
After finding a Nightmare Koalefant there is a chance of a Nightmare Root to spawn in a swamp area. Evil flowers are slowly grow around the root after it has been fertilised.
Hunt: New Moon
Trunk loot on death: Eaten raw puts creatures to sleep over large area and starts night.
Hunger:-10 Health: +1 Sanity: -33
Spoil time: 10 days

Albino Koalefant:
Periodically drops: Moonglow Shard and Moondust
Loot on death: 1 meat, 1 monster meat, 2 moondust, 3 moonglow shards
Moonglow shards will lit a neutral flame when placed.
Moondust can be ignited into fireworks.
Health: 650
Extra: Glows in the dark. Chance of turning mushrooms into mushtrees and flower into evil flowers when night starts. Nocturnal.
Hunt: Full Moon
Trunk loot on death: Eaten raw makes player glow for 120 seconds
Hunger:+10 Health: +20 Sanity: +20
Spoil time: 10 days