Listen up, dog owners.
Sooner or later your pet will get out of your house, yard, or off its eash.
I repeat will. It is not natural for them to be cooped up and restrained, it is natural for them to defend, so they will keep trying to get free to defend their property by attacking people – unless you train them well, just as you have to train a very young child to stay out of traffic and to respect people.
The difference among dogs I see is amazing. Some are well-trained, others hardly. Some are friendly, others eager to attack. Some smart, others dense.
Culling of the gene pool for smarts will happen when your dog gets run over by a motor vehicle.
Training advice and services are available from many sources. If you care about your dog you’ll spend the effort If you don’t, society will curb both of you through the justice system.
If your mutt attacks someone riding a bicycle or tending their garden, which has broken my friends’ bones, I consider you knowledgeably negligent.