I love this! This is so special. Yes, definitely, I found often people who paid to bury their animals in pet cemeteries would have funerals. One Jewish couple I interviewed opted to sit shiva for their Yorkie when he passed. My own family had a ceremony when we scattered my dog Gus's ashes by a lighthouse where he liked to go fishing with my dad. Also a lot of police officers and military folks have in depth burial rituals/ceremonies for their K9 partners/dog colleagues.