An interesting collection of dogs - about ten (6)
I believe the answer is:
curios
'an interesting collection of dogs about ten' is the definition.
I can't judge whether this definition defines the answer.
'dogs about ten' is the wordplay.
'dogs' becomes 'curs' (cur can mean a violent dog).
'about' means one lot of letters goes inside another.
'ten' becomes 'IO' (IO resembles 10).
'curs' placed around 'io' is 'CURIOS'.
Can you help me to learn more?
(Other definitions for curios that I've seen before include "Rare and interesting articles" , "Oddities, peculiarities" , "Knick-knacks" , "Rare and unusual objects" , "Collectible oddments" .)