Dog turning up at Gateshead (3)
I believe the answer is:
pug
'dog' is the definition.
(I know that pug is a type of dog)
'turning up at gateshead' is the wordplay.
'turning' says the letters should be written in reverse.
'at' says to put letters next to each other.
'gateshead' becomes 'g' (head letter of 'gates').
'up' backwards is 'pu'.
'pu'+'g'='PUG'
(Other definitions for pug that I've seen before include "Dog with broad flat nose, or an informal boxer" , "Dwarf breed of bulldog" , "Small compact dog" , "Dog with broad flat nose, or short fighter" , "Flat-nosed dog breed" .)