Do not let the pet unattended with the hat.
Tips for putting the hats on a kitty:
A good treat and relaxed mood are always a good start.
Always be very gentle and talk in a warm, soothing voice.
Encourage and praise the kitty for good behavior.
Don’t force the cat if he/she really does not want to “dress up”.
Don't use without adult supervision.
Don't use the camera flash when taking frontal pictures of the pet.