German shepherd!

The German shepherd is a very intelligent breed. they love love love challenging activities and a lot of exercise.

German shepherds love their owners and can sometimes love them too much.

 They can become over-protective of their family and territory, especially if not socialised correctly.
Most German shepherds are fine with other family pets, if they are introduced to them when they are young.
German shepherds are a great companion and can get along with kids and other pets really well with exposure at a young age.