My favourite goat, Ben died last night

Not sure what happened but we found him dead in the stable. I am not sure if Dusty (section a) had squashed him, but never had a problem and I've been in there with them all and they are all so careful. She seemed unsure about it as she did nuzzle him this morning when I went to check he was dead. Really upset about it.
Now, practicalities.....We now only have one goat left. Do I need to rush out and get a companion for him, or do you think he will be ok for a bit with Dusty. They are incredibly close and he did follow her out of the stable this morning, although did look back to see where his mate was

Funds are a bit tight at the moment so could do with waiting a while, but, if absolutely necessary, I can find some. Secondly, I'm guessing I need to contact someone about it, and do I need to pay for disposal of him, or can I just bury him?
Can't believe how much it's affected me
Helen