Some days ago one of my rabbits is dead. It was a male rabbit. Before, two rabbits were so playful and happy together. But i am noticing some strange behave from my female rabbit. She is hiding herself more than usual, she is either sitting alone or laying down. She is eating as normal but sometimes she keeps the food plate aside and run away. Is she in depression? What to do now? Help me, i am also not feeling happy for that incident.