ARKive's most wanted species listed alphabetically by scientific name
| Scientific name | Common name | Status |
|---|---|---|
| Allophylus roigii | VU | |
| Allophylus zeylanicus | VU | |
| Allophylus zimmermannianus | VU | |
| Alloplectus martinianus | VU | |
| Alloplectus penduliflorus | VU | |
| Allotoca diazi | Patzcuaro Allotoca | CR |
| Allotoca maculata | Opal Goodeid | CR |
| Alluaudina mocquardi | EN | |
| Aloe boscawenii | CR | |
| Aloe pembana | CR | |
| Aloeides caledoni | VU | |
| Aloeides carolynnae | VU | |
| Aloeides egerides | Red Hill Copper | VU |
| Aloeides kaplani | VU | |
| Aloeides lutescens | VU | |
| Aloeides merces | VU | |
| Aloeides nollothi | Nolloth's Copper | VU |
| Aloeides nubilus | Cloud Copper | VU |
| Aloeides pringlei | VU | |
| Aloeides rossouwi | VU | |
| Alona hercegovinae | VU | |
| Alona sketi | VU | |
| Alona smirnovi | VU | |
| Alopochen kervazoi | Réunion Shelduck | EX |
| Alopochen mauritianus | Mauritius Shelduck | EX |
| Alosa killarnensis | Killarney Shad | CR |
| Alosa macedonica | Macedonian Shad | VU |
| Alosa sp. nov. 'Skadar' | Skadar Shad | VU |
| Alosa vistonica | CR | |
| Alosa volgensis | Volga Shad | EN |
| Alouatta discolor | Spix's Red-handed Howler Monkey | VU |
| Alouatta ululata | Red-handed Howling Monkey | EN |
| Aloysia dodsoniorum | EN | |
| Alphitonia erubescens | VU | |
| Alphonsea hainanensis | EN | |
| Alphonsea kingii | CR | |
| Alphonsea lucida | VU | |
| Alphonsea monogyna | VU | |
| Alseodaphne micrantha | VU | |
| Alseodaphne paludosa | VU | |
| Alseodaphne rugosa | EN | |
| Alsinidendron lychnoides | CR | |
| Alsodes montanus | CR | |
| Alsodes vanzolinii | CR | |
| Alsophis sanctonum | Terre-De-Haut Racer | EN |
| Alstonia beatricis | VU | |
| Alstonia breviloba | VU | |
| Alstonia henryi | VU | |
| Alstonia penangiana | VU | |
| Alstonia rubiginosa | VU |