gistfile1.txt

mixin Dog {
  void run() {
    print('Dog run');
  }

  void walk() {
    print('Dog walk');
  }
}

mixin Cat {
  void run() {
    print('Cat run');
  }

  void catWalk() {
    print('Cat catWalk');
  }
}

class Human with Dog, Cat {}

void main(List<String> arguments) {
  Human human = Human();
  human.walk();
  human.run();
  human.catWalk();
}