Mermaid-Grammer-Inspector

classDiagram
    class Animal {
        +String name
        +int age
        +makeSound()
        +eat()
    }
    
    class Dog {
        +String breed
        +bark()
        +wagTail()
    }
    
    class Cat {
        +String color
        +meow()
        +purr()
    }
    
    class Bird {
        +String species
        +fly()
        +sing()
    }
    
    Animal <|-- Dog
    Animal <|-- Cat
    Animal <|-- Bird
    
    class Owner {
        +String name
        +feedAnimal(Animal)
    }
    
    Owner --> Animal : owns