Dorothy cuddled Toto right at the end (3)
I believe the answer is:
dot
'dorothy' is the definition.
(short for Dorothy)
'cuddled toto right at the end' is the wordplay.
'at the end' indicates one should take the final letters.
The final letters of 'cuddled toto right' are 'DOT'.
(Other definitions for dot that I've seen before include "Full stop, period or tittle" , "Full stop, point" , "Flyspeck: period in a web address" , "Speck or period" , "Tiny speck" .)