Certain breeds of dogs have always been good swimmers; it’s in their genetic make-up. Over time, humans have helped dogs further by breeding dogs to become even better swimmers, so they could help with certain jobs. For example, the Portuguese would use the Portuguese Water Dog to herd fish into their nets. Previous generations viewed a dog’s swimming ability as extremely valuable for this reason. Today, we have dogs that are stronger at swimming than ever. However, we also have dogs on the other side of the spectrum. For these dogs, it’s important that they be provided with a dog life jacket to help keep them safe.