If you are sensitive to taxidermy, this isn’t for you. There are many long, and dramatic closeup shots on a real-life taxidermy dead Pekingese dog. At the end, he does become a living dog.
One of the puppets regurgitates leeches onto her victims to kill them. While it didn't bother me, she gags while doing this so it could be triggering to some.
(Slight Spoiler) When Frank and Carissa are in the elevator, Carissa has a vision of the past of a woman who was raped in there. This isn't brought up again afterwards.