Explanation
Ireland has no native snake species, but saying it has no snakes at all is misleading. Snakes brought in by people are kept in captivity, and some have escaped.
The National Museum of Ireland documents snake specimens found in Ireland and describes modern captive collections containing many species. Independently, London's Natural History Museum identifies the common lizard as Ireland's only native reptile, supporting the narrower statement about native fauna.
The Irish museum reports no known examples of escaped snakes surviving to breed in the wild. That distinguishes captive animals and isolated escapes from an established wild population; it does not justify an absolute claim that every snake is absent.
Key takeaway
Ireland has no native snakes, but it does have captive snakes and documented escapes.