Animal getting more 'eated (5)
I believe the answer is:
otter
'animal' is the definition.
(I know that otter is a type of animal)
'getting more 'eated?' is the wordplay.
'getting' means one lot of letters go next to another.
'more' becomes 'ter' (I can't explain this - if you can you should give a lot more credence to this answer).
''eated?' becomes ''ot' ('hot' - 'hot' can be a synonym of 'heated' - said with the 'H' dropped, a cockney accent, like 'heated?' was).
'ter' put after 'ot' is 'OTTER'.
Can you help me to learn more?
(Other definitions for otter that I've seen before include "fish-eater displayed" , "one that eats fish" , "Something furry" , "Aquatic river mammal" , "Good swimmer" .)