Why a dog is a child"s best friend: They bring in dirt and allergens that boost their immune systems

Why a dog is a child's best friend: They bring immune-boosting dirt and allergens into the home Babies in dog-owning families were 44 per cent less likely to get inner ear infections and 29 percent less likely to need antibiotics | UPDATED: 12:43 GMT, 9 July 2012 Dogs are not just man's best friend – they are also extremely beneficial to children as well.