What does Zev mean?
From the Hebrew 'ze'ev' (זְאֵב), meaning 'wolf'. In Jewish tradition it is associated with the tribe of Benjamin, described in Genesis 49:27 as a wolf; often paired with the name Benjamin.
What does Reuben mean?
Hebrew Re'uven, literally 'behold, a son!' (re'u 'see, behold' + ben 'son'). Genesis 29:32 layers a second biblical wordplay on it: Leah says 'the LORD has looked upon (ra'ah) my affliction' — that play is theological rather than the strict etymology.