6 down
Creature
with
limb
trouble
and
unwell
inside
(9)
Creature with limb trouble and unwell inside (9)
hints
0
checks
0
hints
The definition is at the beginning of the clue.
How the clue works
Start with Creature, which is the definition, since an armadillo is certainly an animal. For the wordplay, take ARM for "limb", then ADO for "trouble", and tuck ILL ("unwell") inside that ADO, so you get AD(ILL)O. Stick the two parts together and there you have it.