Select the invertebrate.
A: castor bean tick
B: zebra dove
C: Solomon leaf frog
D: harvest mouse
A zebra dove is a bird. Like other birds, a zebra dove is a vertebrate. It has a backbone.
A harvest mouse is a mammal. Like other mammals, a harvest mouse is a vertebrate. It has a backbone.
A Solomon leaf frog is an amphibian. Like other amphibians, a Solomon leaf frog is a vertebrate. It has a backbone.
A castor bean tick is an insect. Like other insects, a castor bean tick is an invertebrate. It does not have a backbone. It has an exoskeleton.