no, not at all. if pokémon existed amongst earth animals, they would immediately become the most dominant invasive species ever recorded. take pyroar for example, with it's pyrokinetic abilities, it would almost immediately beat out any existing leader of a lion pride with no issue, causing normal cubs to become orphinated, which means a decrease in earth lion cubs and a spike in pyroar cubs. it would be a similar case across the board with similar examples playing out for other apex-predator pokémon.

but what about their prey? or smaller pokémon like meowth and such? well, let's take pikachu and ordinary field mice. pikachu, compared to other field mice, would essentially become the only remaining species, due to the fact it can defend itself from predators utilizing it's electrokinetic power. assuming all pikachu take after ashs' pikachu [which is likely after ash becomes champion in pokémon journeys] pikachu would fight for it's more weaker cousins, causing a record spike in rodent activity. again, a similar story across the board until only pokémon remain as earth's semblance of animal life.

ghost types are a different problem entirely, too. due to the playful, chaotic nature of ghost types, humans will most certainly see a rise in violent, or playful attacks from supernatural beings. this, if left unchecked, could cause heavy damage and even fatalities. this also includes an issue in which pokémon would be restricted from the natural public and could only be affordable for people in the private sector, or extremely rich power brokers who would lobby pokémon use for themselves, either for protection, monetary gain, or otherwise.

TLDR: if pokémon ever attempted to live alongside earth's animals, pokémon would slowly cause all natural species to die out, kill humans, create an even larger power vacuum between the have's and have nots. the only way i could imagine pokémon coexisting with earth'a creatures is in the case of normal type pokémon, but even still, dual type pokémon could become an even more dominant species