From Spain maybe tailless goat fled across Italy (7)
I believe the answer is:
iberian
'from spain maybe' is the definition.
(Spain is part of the Iberian Peninsula)
'tailless goat fled across italy' is the wordplay.
'tailless' means to remove the last letter (the tail of the word is removed).
'goat' becomes 'ibex' (ibex is a kind of goat).
'fled' becomes 'ran' (I've seen this before).
'across' indicates putting letters inside.
'italy' becomes 'i'.
'ibex' with its last letter removed is 'ibe'.
'ran' placed around 'i' is 'rian'.
'ibe'+'rian'='IBERIAN'
(Other definitions for iberian that I've seen before include "from Malaga?" , "Relating to the Spanish peninsula" , "Spanish and/or Portuguese" , "Person from Spain or Portugal" , "Relating to the area of Spain and Portugal" .)