There are few animals that have an opposite, or contrary
species. The exceptions are the general terms predator and prey, or
carnivore versus herbivore.
Higher animals that are the opposite in speed from the
cheetah would be the sloth, or among lower species, the turtle or
An animal cannot have an antonym (opposite word).
However, the poikilotherms (also ectotherms, cold
blooded animals such as reptiles) could be considered the
"opposite" of homeotherms (warm blooded animals such as
There is no direct opposite of zoo.
The opposite condition for animals would be in the wild :
wilderness, habitat, biome.
The opposite organisms (plants) would be found in an
arboretum (botanical garden).