Blunder catching Irish animal, tall (7)
I believe the answer is:
giraffe
'animal tall' is the definition.
(I know that giraffes are tall)
'blunder catching irish' is the wordplay.
'blunder' becomes 'gaffe' (gaffe is a kind of blunder).
'catching' indicates putting letters inside.
'irish' becomes 'IR' (abbreviation).
'gaffe' going around 'ir' is 'GIRAFFE'.
(Other definitions for giraffe that I've seen before include "Long-necked mammal" , "Tall creature" , "one reaching highest places" , "Tallest land animal" , "Tallest living animal" .)