v2.401:

Added Anima Trees to a blacklist for the three dendrovorous animals: the Gallatross, Ironhusk Beetles, and Slurrypede
Added Anima Trees and Anima Grass to a blacklist of plant not affected by the Ocular Jelly
Increased the graphical size of the Mega Louse

v2.4:

Added 4 new creatures that spawn in the new Alpha Biome, the Pyroclastic Conflagration: the Spined Gow, Mettalovore, Fire Wasp and Chemfuel Myrmidon
Tweaked acid burns so they appear as "acid burn" instead of just "burn"
Modified the Cinderlisk and Fire Wasp attacks so they satiate their hunger as well as set their target on fire
Balanced the Siegebreaker: its damage has been reduced, but it will fire more often
Typo: sand lion juvenile showed as arctic lion
Sky eel can now properly survive in space (What for? heh heh)
Thermadon is now non-flammable according to lore, so it can survive the Pyroclastic Conflagration
Tweaked the "weird eater" class because it was acting weird after last RW update. Now animals eating from objects without hit points will reduce the stack count by a configurable percentage
Added a null map chech to Swarmling implantation hediff
Updated Blue Milk item graphic
A Dog Said's prostethic and bionic shell implants no longer remove inner parts

v2.307:

Fixed AnimalExotic tag in several animals that were using the old 1.0 tag

v2.306:

Added AnimalAlpha trade tag to several animals to ensure future compatibility with the Empire mod

v2.305:

Added a new animal implant if you have A Dog Said installed: the good acidifier. This implants allows goos to explode inmediately when they are downed, turning them into living bombs
Modified the Helixien's thought effect so it doesn't affect itself, for Pawnmorpher compatibility

v2.304:

Updated animal ranged attack framework to use a Postfix instead of a Prefix, to help with mod compatibility
Changed Disgusting Nutrient Paste Meal graphic, courtesy of GenomX

v2.303:

Changed CompGasProducer to create even less lag

v2.302:

Modified CompThoughtEffecter, CompHediffEffecter and CompMindEffecter to be much less laggy
Modified Chameleon Yak's code to be more efficient. It's associated code will only run on terrain changes, and only every 4 seconds
Increased armor provided by bionic carapace implants to 10%
Fixed typo with Tar Guzzler's gaping maw body part

v2.301:

Fixed metamorphosisTick for Atispec larvae not being stored when game saved

v2.3:

Added 4 new animals: Bumbledrone Hierophant, Atispec, Plasmorph and Tar Guzzler
Redesigned Bumbledrone and Bumbledrone Queen
Added interactions of these 4 new creatures with the new Alpha Biome: the Tar Pits
Added a lot of exotic implants (tentacles, wings, etc) to A Dog Said, so creatures with a non-standard body plan can now have prosthetics and bionics
Added operation to cure old scars in all Alpha Animals