Here's a working example: http://jsfiddle.net/Gajotres/4uzKp/
$(document).on('pagebeforeshow', '#index', function(){
$(document).on('click', '[data-role="listview"] li', function(){
var selectedAnimal = $(this).find('.ui-btn-text a').text();
var family = $(this).parent().parent().parent().find('.ui-btn-text').first();
family.find('span').remove();
family = family.text();
alert("Selected animal = " + selectedAnimal + ", selected family = " + family);
});
});