A Little about Dachshunds

This is from the internet edition of the Encyclopedia Britannica:

Dachshund, (German: “badger dog”) dog breed of hound and terrier ancestry developed in Germany to pursue badgers into their burrows. The Dachshund is a long-bodied, characteristically lively dog with a deep chest, short legs, tapering muzzle, and long ears. Usually reddish brown or black-and-tan, it is bred in two sizes—standard and miniature—and in three coat types—smooth, longhaired, and wirehaired. The standard Dachshund stands about 8 to 9 inches (20 to 23 cm) tall at the withers and weighs 16 to 32 pounds (7 to 14.5 kg). The miniature is shorter and weighs no more than 11 pounds (5 kg).

Mortimer is a standard long haired black variety. The long haired variety tends to be more docile and affectionate. 

I protrayed Mortimer as more aloof than the average long haired which is a major trait in dachshunds as a whole. The dachshunds bond with their family, but they are not too friendly with strangers.