See the animal going in and catch it (5)
I believe the answer is:
lasso
'catch it' is the definition.
Although both the answer and definition are verbs in their base form, I cannot understand how one could define the other.
'see the animal going in' is the wordplay.
'see' becomes 'lo' (archaic exclamation meaning 'look!').
'the animal' becomes 'ass' (term for a donkey).
'going in' means one lot of letters goes inside another.
'lo' enclosing 'ass' is 'LASSO'.
'and' is the link.
Can you help me to learn more?
(Other definitions for lasso that I've seen before include "use one for catching cattle" , "Belgian composer" , "Cow-catching rope?" , "A cowboy's looped lariat" , "Cowboy's noosed rope" .)