"There is no fundamental difference between man and animals in their mental faculties. Like man, they manifestly feel pleasure and pain, happiness, and misery. Sympathy for the animals is one of the noblest virtues with which man is endowed"
– Charles Darwin
Any toy is right. Especially a dress up toy. I have no problems with you putting a sweater or a pair of shoes on an animal if the ground is freezing and they're a short/no hair breed like an Italian Greyhound or a Xolo. But if you're only going to get a dog or cat to stick it in little sweaters and use it as a fashion accessory, then may said dog relieve itself all over your bed and may it immediately be confiscated. Or, better yet, don't get the dog in the first place!
*dog or any other animal for that matter.
I put that on my profile ^_^