The habitats where dog-lichen~(Peltigera canina) grows:

Alpine and subalpine calcareous grassland
Brownfield
Hard cliff and cliff slope
High montane heath and snow bed
Limestone pavement
Lowland calcareous grassland
Lowland dry acid grassland
Lowland dry heath
Machair sand dune
Montane scrub
Mountain ledge
Rocky slope
Sand dune
Scree
Upland calcareous grassland
Upland dry heath