- Our puppy identification collars are available in 15 different colors. When your pets wear them, you can easily identify them by the colors of the collar. 2. Due to the different size and individually adjustable length, amathings puppy collars fit all dog and cat breeds from day one. The collars can be gradually adapted to the size of the animals from birth. 3. Soft material: nylon and polyester with soft double velor, will not hurt the puppy’s neckline. 4. Compared with other necklaces, the basic necklace has no light adornment and does not burden your pets. Great choice for identifying your adorable puppy. 5. Suitable for puppies and kittens from birth to 8 weeks (most breeds); Soft and light material, comfortable to wear