Table 1.
Dog and Ape Subjects Included in the Study
| Subject | Species/ Breed | Gender | Agea |
|---|---|---|---|
| Dog | |||
| Anton | Bearded Collie | Male* | 4.5 |
| Aron | Labrador | Male* | 8.0 |
| Auguste | Mongrel (Border Collie X German Shepherd) | Female | 6.0 |
| Balou | Mongrel (Border Collie X Labrador) | Male* | 6.0 |
| Bea | Beagle | Female | 3.0 |
| Daisy | Cocker Spaniel | Female | 9.0 |
| Dienne | Berger des Pyrénées | Female | 2.0 |
| Emily | Labrador | Female* | 3.5 |
| Fritz | Welsh Terrier | Male | 6.0 |
| Gale | Border Collie | Female | 9.5 |
| Jack | Bearded Collie | Male | 8.5 |
| Lucy | Labrador | Female* | 5.5 |
| Mascha | Labrador | Female* | 5.5 |
| Paula | Border Collie Mix | Female | 8.0 |
| Pauline | Portuguese Waterdog | Female | 6.0 |
| Prinz | Mongrel (Briard X German Shepherd) | Male | 10.0 |
| Sina | Mongrel | Female | 1.0 |
| Solo | German Shepherd | Female | 6.5 |
| Stoffel | Dwarf Schnauzer | Male | 2.0 |
| Wilma | Labrador | Female | 5.0 |
| Ape | |||
| Riet | Chimpanzee | Female | 30 |
| Ulla | Chimpanzee | Female | 30 |
| Fraukje | Chimpanzee | Female | 31 |
| Limbuko | Bonobo | Male | 12 |
| Ulindi | Bonobo | Female | 14 |
| Pini | Orangutan | Female | 19 |
| Dokana | Orangutan | Female | 18 |
| Viringika | Gorilla | Female | 12 |
a Years, * Neutered