No. All crabs are crustaceans.
Mammals have fur or hair, are warm blooded and give birth.
Crustaceans are cold blooded, lay eggs and have an external skeleton (shell).
Trilobite+sand=crab
Is a crab a reptile or a mammal
Puerto Rican sand crab was created in 1935.
A dead mammal
Sand Crab
of course it needs sand
No, the sand shark is a fish with gills.
Amphibians of course!
cap
snails
No
No, a spider crab is an Arthropod. Did you know that the Japanese spider crab has the longest leg span of all Arthropods?