Tales of Kaimere focuses on a world where single-celled organisms harvest animals and plants from Earth to optimize the biodiversity and health of a specific region. However, over the course of millions of years, these animals evolved similar paths to those on Earth.
- Following the Dynastic Extinction, surviving animals competed to fill the missing megafauna niches. While Abelisaurids, giant Eudromeasaurs, and Enteledonts competed for this niche in Kairul, Megaraptors, particularly the Robust Monarchs, took up the role of apex theropods that tyrannosaurs held. Small herbivores like thescelosaurs in Ni'Kar, elasmerians in Arvel, and pachycephalosaurs in Kairul filled up the roles of common large herbivores held by hadrosaurs before the Dynastic Extinction. One branch of thescelosaurs took the form of basal Sauropods from the Triassic period. Two of these dinosaurs species have been domesticated, the Pakardian Zaydi as a feather and meat source like sheep and the Chethul as a small rider akin to ponies on Earth.
- The giant megaraptorans, Uktans and Zentaurs can be seen as counterparts to lions and tigers respectively. Uktans and lions are social predators that live out on open grassland, while zentaurs and tigers are solitary striped predators that prefer wooded habitats.
- Both before and after the dynastic extinction the mosasaurs diversified into various forms, including large sea serpents and porpise-mimic fish eaters like Itchyosaurs or dolphins. The largest in the modern day, the Motomazor, is a pack-hunting and intelligent predator like the orcas.
- The chalicotheres were initially harvested to take the role of forest gardeners after the large Titanosaurs went extinct. However, the smaller Titanosaurs prove to be faster breeders and clear more trees, outcompeting the chalicotheres. However, one species of chalicotheres, the Ghlanos, evolved to be a massive grazer like the giant rhino relative Paraceratherium.
- Adaptiform Primates harvested during the Oligocene diversified in several forms like lemurs from Madagascar, even taking on gliding niches like flying squirrels. Some have evolved into cursorial hunters like baboons.
- During the Tyrant Dynasty, a branch of basal ceratopsians took to the mountains akin to mountain goats. They attempted to replace their larger relatives as horned grazers after the Dynastic Extinction, but were out-competed by ungalates and parksosaurs
- Cockatrices are a branch of evolved dromaeosaurs that became endurance pack hunters like wolves or hyenas. The blue cockatrices even co-evolved with hyenas on the Eastern Continent as a mixed-species pack.
- During the early Tyrant Dynasty, Carcharodontosaurs were forced to specialize as Titanosaur specialists to avoid competition with Tarbosaurus descendants. Following the Dynastic Extinction and the emergence of the Robust Monarchs, a giant cockatrice in the Eastern Continent specialized to hunting titans as Carcharodontosaurs had.
- On Kaishel, a branch of tapejarid pterosaurs became flightless, intelligent arboreal specialists like apes. On the section of land that became Pakardia and travelled north, one lineage evolved into the sophont Crow Folk just as ancient humanoids have. Similarly, some tapejarids became flightless on the Permian Islands and evolved into grazers like deer.
- Homo erectus harvested one million years ago diversified into different intelligent species, from the Hinterland Giants to the First Children, as counterparts to Earth's species like ''Homo sapiens"' and Neanderthals. Also like humans, they caused cobra relatives to evolve spitting tactics just like true cobras on Earth.
- Multituberculates, following the dynastic extinction, diversified into various forms akin to therian mammals. The Flying Cat looks like its name-sake and has powered flight, with the larger variants in Kairul compared to panthers. The komatu from Kairul evolved from a rabbit-like ancestor into an intelligent pack-hunter like the hyena. The pouch rat is a small generalist like the name-sake rodent, and a widespread invasive species thanks to the First Children. The sea-beaver, despite its appearance and name, is more akin to the sea otters on Earth. A marine species, the Kaimeran Leviathan, takes the form of a basilosaur with the bottom-feeding habits of the recently discovered Basilosaur Perucetus colossus.
- The small Anurognathids pterosaurs took on insectivore niches held by bats and small birds on Earth.
- The dicynodonts on the Permian Continent took on a variety of niches held by mammals on Earth.
- The Hippogriffs and Peryton are browsers like horses and deer.
- The Blue Watchers are stalk-eyed and similar to Fabadonts, and have friendly and social dynamics with each other and other species like Cabybaras.
- The Permian Sloths are low-grazing and make tunnels like their namesake.
- The griffins are tree-dwelling ambush predators like cats, and the Owlbears are large omnivores like bears, with a large and a small black variants.
- The Permian Oliphaunt is a massive grazer with long tusks like an elephant but with a long tongue as an extra appendage.
- Two branches of neodicondonts independently became aquatic herbivores, the Cetocynodonts in the south looking like hippos or dugongs with fangs and the Odobenodonts from the north are more like herbivorous walruses.
- The Permian Islands are full of therocephalian synapsids that diversified into different forms since the Dynastic Extinction. They are the lion-like predator Permian Lion, the kangaroo-like grazer Roo-Hog, and the dog-like Sabertooth Jackals that have been domesticated by local people. A branch of them moved to the trees like sloths and primates, and one evolved powered flight like bats 30 million years ago before evolving into massive dragons following the Dynastic Extinction.
- Parrots harvested during the Oligocene took on a wide range of niches, from sea birds like puffins to raptors like eagles and hawks and even arboreal niches like apes. While out-competed by raptors from Earth, raptoral parrots still persist in the Eastern Continent.
- A gibbon relative that landed on Pakardia evolved into the massive, gorilla-like An'Garu, the largest ape on Kaimere.
- The Garden Ape from the Titan Gardens is analogous to the niche and appearance of chimpanzees but with a softer temperament. It's believed this helps them thrive compared to harvested chimps, who have gone extinct in the Known World and are cryptids in Arvel.
- The buffalo apes are gibbon relatives that took up the role of browsing chalicotheres after their extinction.
- Many Enantiornithes birds evolved to fill various niches, including flightless niches that ratites currently have on Earth. The flightless, Ostrich-like Kundi came with the Houze Grass from Kairul and was more successful than both the resident Greater Rhea in Ni'Kar and the true ostriches harvested. On the Permian Continent, the Ziz is a flightless predator akin to dromaeosaurs.
- House Nerotak from the Quajarith Peninsula has domesticated lions to fulfill similar roles as dogs, from livestock guarding to war scouts to even house pets. They also took breeding tactics from akanuk dog breeders to make sure their lions were healthy.
- The Kaimeran mammoths have a history of both benign and conflicted relationships with Human Subspecies like Asian Elephants on Earth. Unlike Earth humans, many from the Arvelith Highlands see the mammoths and drenduga as fellow beings and treat them as equals.
- An ancient Heterotherm lineage from the First Dynasty was a flying creature with echolocation like bats.
- Hyenadonts from the Oligocene harvest prove successful as semi-aquatic predators like bears and seals, such as the Mud Bear and the Renzhuyo as a freshwater variant of the seals.
- The common sea badger, a type of basal walrus, takes up the generalist role associated with earred seals on Earth.
- The black sloths and wojuns take up the bear's roles as large generalist omnivores. They are one of the reasons that only a few bears are able to exist on Kaimere.
- The raptorial urvogels, a type of Firebirds from Pakardia and Kaishel, are similiar in niche and behavior to dromeasaurs. They even use the currently accepted raptor restraint model to take down Prey, albeit with the aid of their venomous bites. The flightless and large Indrakai is especially a strong representation of their raptor cousins.
- One of these, the Kurakel, has semi-domesticated itself as pest-hunters for Pakardians like cats. The Pakardians use them akin to falcony like Birds of Prey on Earth.
- Ancient rhinos harvested during the Oligocene have evolved into horse-like grazers and hippo-like semiaquatic species called River Rhinos in the Eastern Continent.
- Sobek, a genus of large alligatoroid, was the Tyrant Dynasty equivalent of the Kurajaku. The males were fully aquatic and carved channels into the wetlands while the still land-dependant females dominated the marshlands.
