Comment by myrmidon

Kassel is under 200k people, with ~100 raccoons/km² though!

Curiously, that raccoon population was established legally and intentionally in the 30s to bolster local fur production; later efforts to eradiacte the animals (for being pests from an agriculture perspective) have been given up.

Damage to local ecosystems seems fortunately pretty limited, even though the raccoons are highly successful and spreading.