Translate into FOL. Use these interpretations:

W$($x$)==$ x is a werewolf.

M$($x$)==$ x is making loud noises.

B$($x$)==$ x is a bunny.

D$($x$)==$ x is a dog.

$1.$ Anything that's a dog is making loud noises.

Short form:

$2.$ Anything making loud noises is a werewolf.

Short form:

$3.$ Walter is a dog.

Short form:

Thus,

$4.$ Walter is a werewolf.

Short form: