This is a horrible topic but needs to be written.
Don't just trust your vet at the time when your world has collapsed because you have had to say goodbye to probably one of your closest companions through a part of your life.
There is now an association that hopefully we can trust.
I know we don't want to think about it, and when it happens you have to make the decision so quickly that it becomes something you don't want to research so it is best to check who is good in your area.
Pet cremations are often costed by the weight of the animal and this also allows some in the trade to give you the appropriate weight back in ashes and yet your beloved pet has actually been cremated with others.
So to avoid a mass cremation, check out this link and see who abides to single cremations in your area.
Pet Cremations