The giant anteater is one of the most impressive species to have been successfully reintroduced to the Iberá ecosystem. These are large animals — up to 45 kilograms, nearly 2 metres from snout to tail tip — and they are now reliably encountered in the savannah and wetland-edge habitats within the national park.
Giant anteaters feed exclusively on ants and termites, consuming up to 35,000 insects per day using a tongue that can extend 60 centimetres and flicks in and out of a mound up to 150 times per minute. They have no teeth, virtually no vision beyond a few metres, and rely entirely on smell to find food. Despite their comical appearance, they are powerful animals with claws strong enough to tear apart concrete-hard termite mounds. Females carry young on their backs for up to a year. Park rangers and guides track individuals through the park, and daytime vehicle tours regularly encounter them. Morning and late afternoon are the most productive times.