private void AddAnimal_Clicked(object sender, RoutedEventArgs e)
        {
            AnimalModel animalModel = new AnimalModel();

            animalModel.Animal = textAnimal.Text;
            try
            {
                DbConnectionManager.AddAnimal(animalModel);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
            finally
            {
                textAnimal.Text = "";
                ShowAllAnimals();
            }
        }