Is of Hebrew origin, and its meaning is "dog". Biblical: Caleb, a companion of Moses and Joshua, was noted for his astute powers of observation and fearlessness in the face of overwhelming odds; his devotion to God is symbolized by the "dog" in some traditions.
The name was popular among the Puritans.
Variations of Caleb are:
Cal, Cale, Cayleb, Kaleb, Kayleb and Kaylob.