a galapagos giant tortoise wallowing in a muddy pond

galapagos giant tortoise chelonoidis niger genus ectotherms galaiexcl pagos santa cruz island islands ecuador conservancy tropics ecuadorian national park wildlife archipelago closeup wild animal rare herbivore big protected species shell scales evolution large endangered carapace scaly reptile south fauna tropical america reserve front head longestlived vertebrate domed wallowing pond muddy bathing