Salamanders are often mistaken for _____.

iguanas
lizards
toads
geckos
frogs

frogs

Colorful salamanders may have _____ skin like that of the tree frogs.

rough
dark
smooth
soft
poisonous

smooth

To determine which animal salamanders are often mistaken for, we can compare the characteristics of salamanders with the characteristics of the given options: iguanas, lizards, toads, geckos, and frogs.

Salamanders have a slender body shape and long tail, similar to lizards and geckos. However, they lack scales, which are present in both lizards and geckos. Additionally, salamanders have moist, smooth skin like frogs, while lizards and geckos typically have dry, scaly skin.

Toads, on the other hand, have a short body shape and are known for their dry, bumpy skin. So although salamanders and toads may share similar habitats and habits, they have distinct physical differences.

Therefore, based on these comparisons, the correct answer is that salamanders are often mistaken for lizards.