Possibly Ted Ray's description of a lost dog (7)
I believe the answer is:
strayed
'possibly ted ray's description of a lost dog' is the definition.
I can't judge whether this defines the answer.
'possibly ted ray's' is the wordplay.
'possibly' indicates anagramming the letters.
'ted'+'rays'='tedrays'
'tedrays' with letters rearranged gives 'STRAYED'.
Can you help me to learn more?
(Other definitions for strayed that I've seen before include "Wandered; digressed" , "Went wrong" , "Erred, wandered" , "Went off course" , "Went off the track" .)