make a rabbit happy?

It feels like my rabbit has had a rough month so far. His companion/sister fell very ill and passed, and then I left for a two week vacation. He seems to be acting a little depressed? I try to give him as much attention as possible, but is there a way to make him... happier? Advice on toys, treats, and/or petting methods would be nice!

Your boy is most likely depressed after the loss of his sister. Is getting a neutered female from a rescue to bond with your boy an option? Rabbits are extremely social animals and really do need to be kept with another rabbit.

I'm sorry you lots your girl, its sometimes hard on a rabbit to lose the partner they have always lived with, but its hard on us too! x