(1) Animals with horns arc often symbolic of male sexuality, virility, aggression.
(2) Homs may symbolize fertility - that is, the power of growth within your psyche.
(3) Homed animals may represent evil, which in psychological terms would mean destmetive / threatening forces in the unconscious. (Fertility gods were symbolically represented as homed animals. The Hebrew notion of God - adopted by Christianity and Islam - as outside and above nature led to fertility gods being identified with Satan.) See also Devil, Evil. But see also Unicom, section (2).... A Dictionary of Dream Symbols