The American Livestock Breeds Conservancy recognizes one breed, "Toulouse," and three types: Production, Standard Dewlap, and Exhibition. People have bred the Production type, (the type I raise) as a utility bird found on small farms and homesteads. The Standard Dewlap Toulouse is a massively boned bird, bred for ability to gain weight rapidly and produce fois gras when force fed. The Exhibition Toulouse is bred as a decorative show bird with an exaggerated dewlap and keel. (Types below in order: Production, Standard Dewlap, and Exhibition)
I personally think that the Production Toulouse are the most appealing- some show quality Exhibition types get so massive that they are only able to breed in water! They reach roughly 16-20 lbs (geese at the lower end and ganders on the higher) due to the fact that they are excellent foragers and basically feed themselves in the warmer months. Out of the several breeds that I have owned over the years, they are by far the most docile and overall quiet. They keep to themselves but tend to stay right around you in hopes of a treat of some sort! My pair hatched out in the spring of 2012 from 2 different small farms in Southwest Michigan and have formed a secure flock. Best of all, they seem to keep to their own with other birds and other animals in general even now that they've started hatching out goslings.