Species:

Tupinambis merianae

Argentine Giant Tegu

Some other names for this species:

Argentine Black and White Tegu, Black and White Tegu

Iguaçu National Park, Paraná, Brazil
Argentine Giant Tegu  (Tupinambis merianae)
Argentine Giant Tegu  (Tupinambis merianae)
Argentine Giant Tegu  (Tupinambis merianae)
Argentine Giant Tegu  (Tupinambis merianae)
We were at Iguaçu (spelled Iguazú on the Argentinian side) to see the spectacular waterfalls, but of course I was looking for lizards too. Earlier in the day I had seen a half dozen or so of these huge tegus strolling about while I was in a moving car or tram. I was beginning to worry that the day would end without me getting a decent photograph of this species. Fortunately in the afternoon we walked past a few that were willing to sit still for me.
near Everglades National Park, Miami-Dade County, Florida
Argentine Giant Tegu  (Tupinambis merianae)
The introduced tegus in South Florida were much, much harder to photograph than the cooperative lizards of Brazil. On a day with Dick Bartlett and Jake Scott, we saw three of these impressive creatures, but this crappy through-the-windshield shot was the only photo I managed to get.