Allemansrätten, Sweden's famous 'right of public access,' lets anyone walk, hike or camp across most uncultivated land, including much private land, without asking permission. It sounds like unrestricted freedom for a dog too, but Naturvårdsverket (the Swedish Environmental Protection Agency), the official authority on the right, sets out a specific seasonal rule that overrides that impression for a large part of the year.

From 1 March to 20 August, Naturvårdsverket's guidance states dogs must be under extra control and generally kept on a leash, since they may not run loose during this period — only an extremely well-trained dog may be let off-lead even then. Outside that window, a dog may run off-lead only if it's within sight and can be stopped or called back the moment it encounters wildlife; otherwise it needs a leash or line. Near grazing animals and in reindeer-herding areas, a leash is required year-round, with no seasonal exception.

The legal basis is the Lag om tillsyn över hundar och katter (2007:1150), and Naturvårdsverket's guidance is direct about the stakes: a dog owner has a strict responsibility to avoid harm or serious disturbance to wild and grazing animals — even chasing livestock in a pasture without biting counts — and a dog caught loose by a hunting-rights holder who can't bring it under control risks being shot. It's a genuinely different legal weight from a typical European 'keep dogs on leads' sign, and worth building the whole trip's walking plan around.