Yes, even pets grieve.  They are used to the presence of their beloved.  They are used to the interaction.  They know the connection they enjoyed, and they are aware of the sudden absence of that physical presence.  Explain to them that love never dies.  Give them your love, but do not smother them and add to the confusion.  Show them by your actions that all is well, for ultimately it is.  This is the new normal, and anything new requires an energetic adjustment.  In the meantime, as you fit into your new suits, surround all around you with love, the healing balm.  You are so very loved.