TO ERR IS HUMAN

To err is human .................... to forgive DIVINE

...............................................to prance EQUINE
...............................................to purr ?????
...............................................to moo ?????
...............................................to bark ?????
...............................................to howl ?????
...............................................to soar ?????
...............................................to bleat ?????
...............................................to growl ?????
...............................................to roar ?????
...............................................to slither ?????
...............................................to buzz ?????

Answers:

to purr FELINE
to moo BOVINE
to bark CANINE
to howl LUPINE
to soar AQUILINE
to bleat OVINE
to growl URSINE
to roar LEONINE
to slither SERPENTINE
to buzz APINE