The Los Perros glacier is located within the Torres del Paine National Park, specifically in the section of the Paine massif circuit or popularly known as the "O", it is the first glacier that can be seen next to its lagoon on this route and it is possible see the third day of walking. What is said about the origin of its name is because in the past, during the expeditions carried out by Jhon Garner and Oscar Guineo, it was common to see wild dogs that frequented this sector. Its origin flows from the mountain range of the Olguín glacier, which gives it that characteristic mountain shape similar to a snowdrift.