Spiritual realm
There are too many parametres for this question. Horse is an animal so anything that is not an animal could be considered an antonym. If you are looking for an antonym within the animal kingdom you are again faced with too many parametres. Is the answer to be equine? Is Zebra or Donkey the opposite of Horse? Perhaps you could look at mythical horses such as Pegasus or a Unicorn for your answer.
town?
Animal
The antonym of unicorn is non-magical or ordinary animal.
A big animal .(antonyms are opposites)
one animal.
The animal is Kingdom Animalia.
All animals belong to the animal kingdom.
A cardinal is in the animal kingdom of life.
Yes, the animal kingdom is eukaryotic.
No. The parameciam is in the protist kingdom not the animal kingdom.
Animalia (animal) Kingdom