So you would like to use your Apple AirTag to track your puppy on your smartphone? The TagVault AirTag Dog Collar Mount can help. It is waterproof, so your pet can swim with it. This AirTag holder fits dogs and cats over 10 to 12lbs.
This AirTag mount comes with self-piercing screws to go through synthetic and leather collars up to 5mm. You can find out more about it here.