Cute footage shows penguins, capybaras, giant tortoises and more being weighed in an annual zoo tradition. <br /><br />Giant Galapagos tortoises, Humboldt penguins, ring-tail lemurs, giant katydids, and magnolia land snails can all be seen on the scales after a weigh in at London Zoo today (August 19).<br /><br />The famous zoo regularly weighs and measures their animals to monitor their health and to identify pregnancies. <br />
