public class VeterinaryReport {
    private int numberOfDogs;
    private int numberOfCats;

    public VeterinaryReport(int numberOfDogs, int numberOfCats){
        this.numberOfDogs = numberOfDogs;
        this.numberOfCats = numberOfCats;
    }

    public void addDogs(int additionalDogs){
        this.numberOfDogs += additionalDogs;
    }

    public void addCats(int additionalCats){
        this.numberOfCats += additionalCats;
    }

    public void showReport(){
        System.out.println(this.numberOfDogs + " dogs\n" + this.numberOfCats + " cats");
    }

    public static void main(String[] args){
        VeterinaryReport vr = new VeterinaryReport(12, 13);
        vr.addCats(3);
        vr.addDogs(4);
        vr.showReport();
    }
}