What does the cryptic crossword clue "Horse Corin replaced for a horned animal (10)" mean?

The definition is "animal". The wordplay uses an anagram. anagram of HORSE + CORIN = RHINOCEROS; definition: "animal" The answer is RHINOCEROS.

Horse Corin replaced for a horned animal (10)

Daily Mail Cryptic #17254 | 13 Across | 2023-12-20 flower