ARKive's most wanted species listed alphabetically by scientific name
| Scientific name | Common name | Status |
|---|---|---|
| Zaglossus attenboroughi | Sir David's Long-beaked Echidna | CR |
| Zaglossus bruijnii | Western long-beaked echidna | CR |
| Zalophus japonicus | Japanese Sea Lion | EX |
| Zamia acuminata | VU | |
| Zamia cunaria | VU | |
| Zamia disodon | CR | |
| Zamia elegantissima | EN | |
| Zamia erosa | VU | |
| Zamia gentryi | CR | |
| Zamia hymenophyllidia | CR | |
| Zamia katzeriana | EN | |
| Zamia macrochiera | CR | |
| Zamia melanorrhachis | EN | |
| Zamia montana | CR | |
| Zamia monticola | CR | |
| Zamia neurophyllidia | VU | |
| Zamia oreillyi | VU | |
| Zamia prasina | CR | |
| Zamia purpurea | CR | |
| Zamia pygmaea | CR | |
| Zamia restrepoi | CR | |
| Zamia stricta | VU | |
| Zamia urep | CR | |
| Zamia wallisii | CR | |
| Zanthoxylum albuquerquei | VU | |
| Zanthoxylum atchoum | VU | |
| Zanthoxylum chevalieri | VU | |
| Zanthoxylum deremense | VU | |
| Zanthoxylum ferrugineum | EN | |
| Zanthoxylum hartii | VU | |
| Zanthoxylum holtzianum | VU | |
| Zanthoxylum lindense | VU | |
| Zanthoxylum oahuense | Oahu Prickly-ash | VU |
| Zanthoxylum psammophilum | EN | |
| Zanthoxylum thomasianum | St Thomas Prickly-ash | EN |
| Zaprochilus ninae | VU | |
| Zaumia kusceri | CR | |
| Zaumia sanctizaumi | CR | |
| Zearaja chilensis | Yellownose Skate | VU |
| Zearaja maugeana | Port Davey Skate | EN |
| Zebrias lucapensis | VU | |
| Zehnderia microgyna | CR | |
| Zenkerella perplexa | VU | |
| Zieria chevalieri | VU | |
| Zilchogyra paulistana | CR | |
| Zinowiewia madsenii | VU | |
| Ziziphus hutchinsonii | VU | |
| Ziziphus talanai | VU | |
| Zonitoides jaccetanicus | EN | |
| Zonocypretta kalimna | Seed Shrimp | VU |