For Identification. My dogs wear identification tags, and to let people know they have their rabies vaccinations. And if my pet gets lost I want my beloved pet back.
However, I dislike tags at the same time because when my dogs play they pull and jerk at the tags until they break and I worry about them swallowing the tags.

They are also microchipped. They are that important to me!!

However, pet birds, and I have 5 of them, as much as I’d like to microchip them I cannot and will not have the proceedure done because even the best Avian vet can slip and since their bodies or so small the risk of death is to great, and it’s a risk I’m not willing to take.

Clothing? Yes, but only if it is for a health reason, not to dress up. If a dog such as a poodle is kept outside, and it irks me when people make a pup that small stay out side all the time needs a jacket. One pet bird, a feather plucker has to wear a flight suit to stay warm because my heat is not even enough in the winter to keep her warm.
Hope this helps you some.