The following words - phonetically - have something in common. Can you determine what it is? 

APE
BOW
CANE
CAP
FEEL
OF
LOOP
SIR

HINT:
It has to do with animals.

Answers:

The suffix INE (sometimes with an initial letter) can be added to each word, when it is pronounced phonetically, to form a word that describes a group of animals. 

APINE  (bees)
BOVINE (cows)
CANINE (dogs)
CAPRINE (goats)
FELINE (cats)
OVINE (sheep)
LUPINE (wolves)
CERVINE (deer)