cosmopet-architecture/wp-content/themes/cosmopet/temp-functions/menu-logic.php

<?php

function register_custom_menus() {
    add_theme_support('menus');
    register_nav_menus([
        'main-menu' => 'Основное меню',
        'cats-menu' => 'Меню для кошек',
        'dogs-menu' => 'Меню для собак',
    ]);
}
add_action('after_setup_theme', 'register_custom_menus');