9. Rottweiler – 328 PSI
Rottweilers aren’t a breed to be owned by the faint-hearted. Males, in particular, can be aggressive and therefore, do your research before considering purchasing one yourself. Being one of the most ancient breeds of dog existing today, these dogs have an impressive ancestral heritage – having accompanied the Romans through Germany and surviving extinction, they’ve definitely earned their place as one of the most popular dog breeds today.
Although they sometimes get a bad rap, the Rottweiler is one of the smartest breeds out there – suited to domestic life by being intelligent, trainable, and docile. It should be constantly socialized and not left alone for long periods of time, even though not leaving your dog for more than a few hours is surely common sense for a dog owner. However, Rottweilers can suffer from serious health complications from cardiac disease to rarer blood disorders such as von Willebrand’s disease. These potentially crucial complications lead to your average Rottweiler possessing a lifespan of only 8-10 years.