Blighted creatures; any regions where the Blight has been or has suffered prolonged Darkspawn activity, Tavin is researching the papers or has visited to look into what might have happened to the animals. Has visited Orzammar as part of this.
Dragons; generally due to Archdemons looking like big dragons and his fascination with dragons and the whole Nevarran dragon thing.
Relationships between specific animals; nugs etc it's a whole thing.
The Western Approach
Giants
Hyenas
Phoenixes
Quillbacks
Spiders
Giant spiders
Poisonous spiders
animals;
Fennec
Gurn
studies;
studying desert animals and furthering darkspawn proximity on animals
The Hissing Wastes
Lurker
Spiders
Varghest
Wyvern
animals;
August Ram
Fennec
Gurn
Storm Coast
Fallow Mire
Emerald Graves
Bears
Great bears
Black Wolves
Giants
Spiders
animals;
August Rams
Brontos
Nugs
Emprise du Lion
August Ram
Black wolf
Bear
Great Bear
Snoufleur
Exalted Plains
Gurgut
Wolves
animals;
Halla
Snofleur
Frostback Basin
Bogfisher
Snoufleur
Tuskets
creatures;
Gurguts
Lurkers
Poison Spiders
elsewhere;
Dragons; generally due to Archdemons looking like big dragons and his fascination with dragons and the whole Nevarran dragon thing.
Relationships between specific animals; nugs etc it's a whole thing.