In friendship, possibly, they're a little beastly (6)
I believe the answer is:
hippos
'a little beastly' is the definition.
I can't judge whether this definition defines the answer.
'in friendship possibly they're' is the wordplay.
'in' indicates the answer is hidden within the clue.
'HIPPOS' can be found hidden inside 'friendship possibly theyre'.
Can you help me to learn more?
(Other definitions for hippos that I've seen before include "African natives" , "River horses" .)