mammifères
| Nom | Type | Notoriété | Popularité |
|---|---|---|---|
| Islero | Objet | 10 | 9.6 |
| Ivan | Objet | 3 | 1.4 |
| Jack | Objet | 24 | 1.4 |
| Jaglu | Concept | 8 | 3.3 |
| Jaisalmeri | Concept | 1 | 0.6 |
| Jandilla | Concept | 3 | 2.1 |
| Jebli | Concept | 1 | 0.2 |
| Jenny | Objet | 6 | 2.6 |
| Jia Jia | Objet | 5 | 0.1 |
| Jiulong | Concept | 2 | 0.0 |
| Joaquín Núñez del Cuvillo | Concept | 2 | 2.4 |
| Jocko Besne | Objet | 1 | 4.0 |
| John L. Sullivan (éléphant) | Objet | 3 | 0.2 |
| Jojo | Objet | 1 | 1.7 |
| Juan Pedro Domecq | Concept | 2 | 3.7 |
| Judy | Objet | 7 | 1.2 |
| Jumbo | Objet | 32 | 21.0 |
| Junín | Concept | 1 | 0.1 |
| Juramaia | Taxon | 17 | 2.9 |
| Juxia | Taxon | 10 | 0.7 |
| K9 Killer | Objet | 3 | 0.0 |
| Kako | Objet | 2 | 1.1 |
| Kalarrytiko | Concept | 1 | 0.0 |
| Kamunyak | Objet | 3 | 1.2 |
| Kanzi | Objet | 17 | 8.4 |
| Karakul | Concept | 38 | 9.4 |
| Karayaka | Concept | 6 | 0.8 |
| Kenguri | Concept | 1 | 0.0 |
| Kenyapotamus | Taxon | 13 | 0.2 |
| Kerberos | Taxon | 10 | 0.0 |
| Khaniin Khetsiin Khuren | Concept | 1 | 0.0 |
| Khanzir | Objet | 9 | 0.3 |
| Kiko | Concept | 4 | 2.8 |
| Kilakarsal | Concept | 2 | 0.0 |
| Kimbetohia | Taxon | 5 | 0.0 |
| Kinkajou | Taxon | 60 | 83.4 |
| Kirdimi | Concept | 1 | 0.8 |
| Kiyatherium | Taxon | 1 | 0.1 |
| Kohaku | Concept | 7 | 3.4 |
| Kohi | Concept | 2 | 0.1 |
| Koko | Objet | 32 | 54.4 |
| Kollikodon | Taxon | 20 | 0.1 |
| Komir | Objet | 1 | 1.3 |
| Komondor | Taxon | 40 | 63.4 |
| Kopidodon | Taxon | 13 | 0.0 |
| Kryptobaatar | Taxon | 11 | 0.3 |
| Kurī | Objet | 12 | 1.5 |
| Kyptoceras Amatorum | Taxon | 6 | 0.0 |
| Lacaune | Concept | 11 | 20.3 |
| Lacaune Lait | Concept | 1 | 0.5 |