The hands held in benediction are the symbol of the Cohens, members of the priestly family of the tribe of Levi. The rabbi devinely blesses the congregation with this posture of the hands. The status of priest is hereditary and carries numerous rights and responsibilities.
Animals are often a reference to the name of the deceased. The lion corresponds with the name Ari, Leib, Löw (Loew), etc. The lion is also the symbol of the tribe of Judah.