"They have cradled you in custom, they have primed you with their preaching,
They have soaked you in convention through and through;
They have put you in a show case; you're a credit to their teaching--
But can't you hear the Wild? -- it's calling you.
Let us probe the silent places, let us seek what luck betides us;
Let us journey to a lonely land I know.
There's a whisper on the night-wind, there's a star agleam to guide us,
And the Wild is calling, calling...let us go."
Robert Service - The Call of the Wild

If we can't grieve for our pets we don't deserve the title of human, nor if we can't help them go peacefully when its their time. I'm sorry for your loss.