Dragon Encyclopedia

The Dragon Encyclopedia was the April Fools' Day prank in 2014. TJ "dressed up" as  Ƨ ockPuppet Strangler (at first he had only changed his name, then later on he also changed his avatar to the one Sock uses) and made the following announcement on the news forums:

There had been some speculation on the actuality of this release, as Soon™ popularly means "supposedly 'soon' but it's been said enough times for people to know better." Among other 'Easter eggs' hidden in the post is that the thread was actually posted on 12:59 AM on March 31st, 2014, implying that it was possible that it would be implemented.

As of Dragon Cave's birthday in 2014, TJ09 announced that the Dragon Encyclopedia would actually be released to everyone, following a beta period that some users experienced. Now, the Dragon Encyclopedia is accessible by everyone by the Account page. The new Encyclopedia has not only details of dragons, but the world, magic, and elements.

As you "observe" (view via Clicks) or raise dragons, you will get more information about each dragon. The information is sorted into: Appearance/Basic Anatomy, Hatchling Behavior, Adult Behavior, Habitat, Diet. It also includes relevant information such as their biome location and elemental affinity.

To unlock all the sprites, one would need to:
 * Own 1 or observe 5 eggs to unlock the egg sprite.
 * Own 1 or observe 5 S1hatchlings to unlock the S1 hatchling sprite.
 * Own 2 or observe 10 S2 Hatchlings to unlock the S2 hatchling sprite.
 * Own 3 or observe 15 adults to unlock the adult sprites in the Encyclopedia.

The Encyclopedia counts how many you already own or have seen in the bottom (since the Encyclopedia was released- any dragons owned before this are not counted). Any alts or variations of dragons require observing the alt or variation version of the dragon to unlock the sprite.