Lived Safety with Endangered Animal..!!

Long time ago,people gained many usefulness from endangered animals.For instance,Viper poison was used for medication,Wild animals were tested in science.
At this time,people tend to be use animal for pets.Many problems were happened because pet owners lack for responsibility.But some cases very close to our lives,it's the violent dogs.Dogs were domesticated from wolves as recently as 15,000 years ago.Although dogs have lived with and worked with humans in so many roles but they still have wild instinct.Dogs can divide by many categories;such as,size,appearance,type of use,or origin.But some violent dogs like Rottweilers and pit bulls have record to attack people.Some people breed them for sports (Dog fight) which illegalize.Many communities are trying to pass laws to ban certain breeds.Instructions for these violent dogs:Never leave infants or young children alone with a dog,Train and socialize your dog,Advise children to avoid approaching unfamiliar dogs.Therefore,people who possessed the violent dogs should be aware their pets for security in the neigborhood.