Taxidermied adult male jaguar. The largest cat in the Americas, the jaguar is the apex predator of Paraguay's Atlantic Forest and Chaco. This specimen was prepared from a naturally deceased individual found in the Mbaracayú Reserve.

Study skin of adult male. The Bare-throated Bellbird is an Atlantic Forest endemic whose distinctive metallic call can be heard over a kilometer away. Listed as Vulnerable due to habitat loss.

Preserved juvenile specimen (65 cm TL). The Broad-snouted Caiman inhabits wetlands, rivers, and marshes throughout eastern Paraguay. This species serves as an indicator of wetland health.

Pinned adult specimen showing iridescent blue dorsal wing surface. One of the most iconic Neotropical butterflies, the Blue Morpho's color is caused by light-diffracting microscopic structures rather than pigment.

Herbarium sheet with flowering branch, leaves, and bark sample. The Lapacho is one of Paraguay's most iconic trees, famous for its spectacular pink blooms. Its bark has been used in traditional medicine for centuries.

Preserved specimen (78 cm SL). The Surubí is one of the largest catfish in the Paraguay-Paraná river system and is of major commercial and ecological importance. This specimen was collected during a fish biodiversity survey.

Taxidermied specimen. The Chacoan Peccary was known only from fossils until its sensational discovery as a living species in the Paraguayan Chaco in 1975. It is endemic to the Gran Chaco and is classified as Endangered.

Mounted specimen. The Giant Anteater is an iconic inhabitant of Paraguay's savannas and Chaco grasslands. This specimen was prepared from a road-killed individual and is a centerpiece of the museum's public exhibition.