Cud-chewing mammal showed up by lake (5)
I believe the answer is:
'cud-chewing mammal' is the definition.
I can't judge whether this definition defines the answer.
'showed up by lake' is the wordplay.
'showed up' becomes 'came' (to show up is to come or attend).
'by' says to put letters next to each other.
'lake' becomes 'l' (geographical abbreviation).
Can you help me to learn more?
(Other definitions for camel that I've seen before include "Humped animal", "Dromedary, perhaps", "Bearer of burdens", "Desert transport", "Cud-chewing mammal of desert regions".)