Staffordshire Terrier
More or less a cousin of the Pit Bull, the Staffordshire Terrier is a strong breed that must be well-trained as early as possible to keep it from becoming overly aggressive. To be fair, they have a history of being friendly with humans, which is why some are inclined to keep them as pets. However, they have been bred for many years to fight with other dogs, so there is definitely a nasty streak in their lineage. This makes them a risky pet to have in the eyes of insurance companies that would rather not take any chances.
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Presa Canario
As the name implies, this breed of dogs originally came out of the Canary Islands. However, unlike vacationers in the Canary Islands, the Presa Canario is not laid back or relaxed in any way. This is a big dog that has garnered a bad reputation over the years despite being useful in corralling livestock. It’s this work as a type of sheepdog that has given the Presa Canario the instincts to take down a human seen as a threat. Most locales that have a list of banned dog breeds usually include the Presa Canario on that list. They are not bred to live in houses or apartments, so unless you have some livestock that needs watching, you’d be wise to stay away.
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Japanese Tosa
This is a rare breed, and at least a dozen countries have banned them from being kept as pets. In other countries, it’s common for insurance companies to deny insuring homes that have a Japanese Tosa. Historically, they have been bred as fighting dogs. But unlike other types of fighting dogs, their aggression isn’t always focused on other dogs. They have been described as a bold and fearless breed that has no problem showing aggression toward humans, including their owner. With a dog of this size, it can be impossible for owners to get a Japanese Tosa under control once it starts to attack its target.
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