Animal that may become richer soon (10)
I believe the answer is:
rhinoceros
'animal that' is the definition.
'rhinoceros' can be an answer for 'animal' (I've seen this before). I'm not sure about the remainder of the definition.
'become richer soon' is the wordplay.
'become' indicates an anagram.
'richer'+'soon'='richersoon'
'richersoon' is an anagram of 'RHINOCEROS'.
'may' acts as a link.
Can you help me to learn more?
(Other definitions for rhinoceros that I've seen before include "Big game" , "Horny character" , "Horned mammal" , "Horned creature" , "Horned ungulate" .)