Giant otters live in family groups, consisting of a mother, father, and young otters, or pups. A group of otters usually consists of around eight family members but can reach sizes up to 20 otters. A family of otters, called a raft, hunt, play, sleep, and socialize together. Giant otters are very vocal and will make loud barks to warn the raft of otters about incoming predators or other threats. Giant otters are territorial and mark off their land with latrines or ditches. Giant otters do not store their food and, when they make a kill, they will find a peaceful place, or picnic spot, to eat it.