In the Bible Caleb, the the son of Jephunneh, was from the tribe of Judah (Numbers 13:6). He was sent out by Moses (along with Joshua and other Israelites) to spy out the promised land. Although the Hebrew spelling of the name Caleb is similar to the spelling of the word “dog” it is not the same. I believe the Hebrew word for dog is ‘celeb’ and not Caleb. Caleb means faithful or wholehearted.
An alternate Hebrew meaning offered for Caleb is "faithful, devotion, whole hearted, bold, brave". This is on the basis of its being actually a compound word, a phenomenon quite common in ancient Hebrew. Col (כל, Kaf + Lamed) = "all" or "whole"; Lev (לב, Lamed + Bet) means "heart". Therefore, Caleb (or Calev as pronounced in Hebrew) would actually mean "whole hearted". This might be due to the Biblical Caleb, a companion of Moses and Joshua, being noted for his astute powers of observation and fearlessness in the face of overwhelming odds... Another plausible origin is a transposition of a name found in other ancient Semitic languages such as Phoenician and Ugaritic, meaning "servant of the Lord". https://en.wikipedia.org/wiki/Caleb_(given_name)
1 Samuel 25:3 makes reference to a surly character called Nabal the Calebite, a descendant of Caleb. He was aptly named, because the man was also a fool, unlike Caleb who had faith in God’s promises and power. Both Caleb and Joshua were blessed by God because of their faith (Numbers 14:30, 38; 26:65). Caleb proved, by his actions, that he was “whole hearted” in his faithfulness to God.