What is the reservoir for Baylisascaris procyonis?

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Raccoons are the reservoir because they are the definitive host that harbors adult Baylisascaris procyonis worms and continuously sheds infectious eggs in their feces. These eggs are highly resilient in the environment and can persist in soil for long periods, enabling transmission to humans or other animals that accidentally ingest contaminated material. The other animals listed may encounter the eggs or be exposed to related parasites, but they do not sustain the life cycle of Baylisascaris procyonis in nature the way raccoons do, making them non-primary reservoirs.