Tags
| Name ▲ | Type | Count |
| upov | Artist | 2 |
| ups | Copyright | 4 |
| upset (pixiv) | Artist | 1 |
| upside down | General | 1 |
| upskirt | General | 10 |
| upstairstudios | Artist | 7 |
| uptowndeathclaw | Artist | 3 |
| upwards | Artist | 11 |
| ura | Artist | 1 |
| uraba | Artist | 4 |
| uraimon | Artist | 8 |
| urallibi | Artist | 1 |
| uramenu | Artist | 53 |
| uranoyoru | Artist | 52 |
| urban | Artist | 1 |
| urban-coyote | Artist | 1 |
| urban the arcanine | Character | 4 |
| urbanator | Artist | 3 |
| urbanica | Artist | 3 |
| urbanmonster | Artist | 6 |
| urbosa | Character | 1 |
| urchin (jackrabbit) | Character | 6 |
| urefunest | Artist | 1 |
| urekemo | Artist | 8 |
| ureos (artist) | Artist | 14 |
| urethra | General | 10 |
| urethral bulge | General | 1 |
| urethral oviposition | General | 1 |
| urethral penetration | General | 2 |
| urhornydumbass | Artist | 1 |
| uri (uri ad) | Character | 1 |
| uriell3 | Artist | 10 |
| urielmanx7 | Artist | 27 |
| uriinu | Artist | 2 |
| urinal drone (hacony) | Character | 1 |
| urine | General | 3 |
| urmutsu (diaperedshaman) | Character | 4 |
| uro0000 | Artist | 4 |
| uro (artist) | Artist | 5 |
| uro 99 | Artist | 6 |
| uroboros (artist) | Artist | 2 |
| uroboros lichi | Artist | 1 |
| urocos | Artist | 17 |
| uromatsu | Artist | 366 |
| urorie4 | Artist | 8 |
| uroroze | Artist | 8 |
| urpone | Artist | 1 |
| ursa | Character | 1 |
| ursa-m1nor | Artist | 102 |
| ursa (ursa) | Character | 3 |