Choose dog collar
Collars for dogs come in different shapes and sizes and for different functions. Here we'll go through the most common types to make it easier for you to make a choice tailored to your dog. We also want to give you the tools to know the difference between these and the positives/negatives of each option.
Collars for puppies
Good collars that fit puppies are often very adjustable as they can work as the puppy grows. The puppy collar should be light so it doesn't put too much weight on the puppy's neck and preferably be a solid collar (learn about solid collars further down).
Fixed collars usually have an openable buckle which makes it easy to put on and take off on the dog. These collars work on dogs that don't usually back up to get out or have the same size neck and head. The collar is comfortable and suitable for wearing even when the dog is not on a leash. Some dogs find it uncomfortable to wear a collar over their head. For them, a fixed collar is preferable.
A half-strap collar has a loop on the collar that makes it harder for your dog to escape by backing up or wriggling out. It is also suitable for dogs whose necks are the size of their heads. With a half-strap, it doesn't mean your dog is strangled, but the loop allows the collar to be tucked in exactly around your dog's neck. This type of collar can also be beneficial when you want to easily put the collar on and take it off - perhaps during training or competition.
Never buy a full-strap collar
Full-strap collars have no extra loop and do not stop strangling your dog when it reaches the circumference of the neck. If you tug on the leash or your dog throws himself off/draws on the leash, the collar will strangle the dog. This can cause serious damage to the neck and throat in the form of whiplash injuries, the front of the neck can be damaged (especially the trachea), the hyoid bone in the neck can be snapped and more. This is of course very unpleasant for your dog.
Padded dog collars
Many collars today are padded to provide optimal comfort. The collar also provides cushioning which makes them comfortable and can less damage the dog's neck. Does your dog pull on the leash sometimes or may lunge? Then we think you should use a harness in the first place, see more here. In the second instance, we think a padded collar is preferable. There are both solid collars and half-strap varieties that are padded.