private void SubmitButton_Click(object sender, RoutedEventArgs e)
        {
            ShelterView shelterView = new ShelterView(s);
            string      Sex         = null;
            int         AgeInput    = 0;
            decimal     WeightInput = 0;

            if (AgeTextBox.Text.Length == 0)
            {
                MessageBox.Show("No Age was inputted.");
            }
            else
            {
                AgeInput = Convert.ToInt32(AgeTextBox.Text);
            }

            if (WeightTextBox.Text.Length == 0)
            {
                MessageBox.Show("No Weight was inputted.");
            }
            else
            {
                WeightInput = Convert.ToDecimal(WeightTextBox.Text);
            }

            if (MaleRB.IsChecked == true)
            {
                Sex = (string)MaleRB.Content;
            }
            else if (FemaleRB.IsChecked == true)
            {
                Sex = (string)FemaleRB.Content;
            }
            else
            {
                MessageBox.Show("No sex was inputted.");
            }


            Animal animal = new Animal(PetNameTextbox.Text, SpeciesTextbox.Text, AgeInput, Sex, WeightInput);

            s.Add(animal);

            PetsDisplayLabel.Content = shelterView.Show();
        }