BuddyPress add profile tab and subnav

bp-profile-tab-and-subnav.php

function add_animal_tabs() {
	global $bp;
	
	bp_core_new_nav_item( array(
		'name'                  => 'Animals',
		'slug'                  => 'animals',
		'parent_url'            => $bp->displayed_user->domain,
		'parent_slug'           => $bp->profile->slug,
		'screen_function'       => 'animals_screen',			
		'position'              => 200,
		'default_subnav_slug'   => 'animals'
	) );
		
	bp_core_new_subnav_item( array(
		'name'              => 'Dogs',
		'slug'              => 'dogs',
		'parent_url'        => trailingslashit( bp_displayed_user_domain() . 'animals' ),
		'parent_slug'       => 'animals',
		'screen_function'   => 'dogs_screen',
		'position'          => 100,
		'user_has_access'   => bp_is_my_profile()
	) );		

	bp_core_new_subnav_item( array(
		'name'              => 'Cats',
		'slug'              => 'cats',
		'parent_url'        => trailingslashit( bp_displayed_user_domain() . 'animals' ),
		'parent_slug'       => 'animals',
		'screen_function'   => 'cats_screen',
		'position'          => 150,
		'user_has_access'   => bp_is_my_profile()
	) );	

}
add_action( 'bp_setup_nav', 'add_animal_tabs', 100 );



function animals_screen() {
    add_action( 'bp_template_title', 'animals_screen_title' );
    add_action( 'bp_template_content', 'animals_screen_content' );
    bp_core_load_template( apply_filters( 'bp_core_template_plugin', 'members/single/plugins' ) );
}
function animals_screen_title() { 
	echo 'Animals Title<br/>';
}
function animals_screen_content() { 
	echo 'Animals Content<br/>';
}


function dogs_screen() {
    add_action( 'bp_template_content', 'dogs_screen_content' );
    bp_core_load_template( apply_filters( 'bp_core_template_plugin', 'members/single/plugins' ) );
}
function dogs_screen_content() { 
	echo 'Dogs'; 
}

function cats_screen() {
    add_action( 'bp_template_content', 'cats_screen_content' );
    bp_core_load_template( apply_filters( 'bp_core_template_plugin', 'members/single/plugins' ) );
}
function cats_screen_content() { 
	echo 'Cats'; 
}

Thank you! Thank you! Thank you! Thank you! Thank you! Thank you!

How and where to add this code mam/sir?

In a plugin, in bp-custom.php or in your child theme -> functions.php

Ok! Thank you so much. I'm currently using BuddyPress to organize our online school since COVID prohibited us to operate physically. This really helps!

Is it possible that when someone click on Animal she / he will go to the Dogs tab automatically, means bydefault open Dogs tab when click on Animal tab ?