Readers’ wildlife photos

Today we have the second installment (13 total) of Robert Lang‘s photos from his visit to Brazil’s Pantanal region. Robert’s captions and IDs are indented, and you can enlarge his photos by clicking on them.

The Pantanal, Part II: Mammals

Continuing our mid-2025 journey to the Pantanal in Brazil, we saw quite a few different species of mammal, ranging from tiny monkeys to the giant anteater. Most of these sightings came from safari jeep trips, which we typically took twice a day. But not all; on one of our first river outings, we saw a giant river otter (Pteronura brasiliensis) chowing down on a fish. These guys get up to about six feet long—but they’re still adorable. (They’re one of the most endangered mammal species in the Neotropics, according to Wikipedia):

Even higher on the adorability scale was this crab-eating fox (Cerdocyon thous) mother and kits that we happened across. We watched the kits chew on their mother and each other and tumble around as the sun went down, and eventually they all wandered off into the grass. As regular readers know, true foxes are Honorary Cats, according to our host; these foxes are not closely related to true foxes, so their honorary feline status is, as yet, undetermined [JAC: I pronounce these Honorary Cats as well]:

Another contender for the cute-ness crown is the capuchin monkey (family Cebinae; I don’t know the species here). We usually saw these in groups, but they usually headed for the trees before we got close enough for good photos. I got this one, though:

Another small mammal that we saw quite a few of is the agouti (Dasyprocta sp.) It’s one of the larger rodents of South America:

But the largest species of rodent is the capybara (Hydrochoerus hydrochaeris), of which we saw many. In fact, they wandered around our cabins at one of the places we stayed. They seem like they’re always somewhere between chill and bored, and get up to 60–70 kilos in mass. The babies, though, rival the animals I’ve already shown for cuteness. (Baby animals will do that.)  [JAC: This is the world’s largest living rodent]:

On the larger side of things, there were a few types of deer. Here’s a pampas deer (Ozotoceros bezoarticus) buck:

And a gray brocket (Mazama gouazoubira):

A few non-natives, introduced by the ranchers who own most of the Pantanal. There are feral pigs (Sus domesticus), but we saw them only once or twice:

But we regularly saw cattle, which are the primary agricultural output of the Pantanal. Most of them are light-colored Zebuines (Bos indicus), a humped breed that can survive through the long dry season, but there are a smattering of other breeds around:

The local jaguars can and do take cattle on occasion, so some of the ranchers have added a water buffalo (Bubalus bubalis), larger and more aggressive, to their herd, to discourage any jaguars lurking about:

But the largest—at least, by length, though not weight—of the mammal sightings was the relatively rare giant anteater (Myrmecophaga tridactyla). We had two sightings of those, one of which we were able to approach on foot from downwide (their eyesight is terrible, but their sense of smell is acute); that was a lucky treat:

Coming soon: reptiles, invertebrates, and birds, birds, birds.