Red Book an kirkireshi kuma an fara buga shi a shekarar 1964. Ya ƙunshi bayani game da barazanar duniya ga dabbobi, tsirrai da fungi. Masana kimiyya suna bin diddigin nau'ikan halittu wadanda zasu gushe kuma sun kasu kashi takwas:
- rashin bayanai;
- Damuwar Kananan;
- akwai barazanar bacewa;
- m,
- bayyananniyar barazanar bacewa;
- bacewa;
- dadadden yanayi;
- gaba daya ya bace.
Matsayin jinsin a cikin Littafin Ja yana canzawa lokaci-lokaci. Tsirrai ko dabba da ake ɗauka suna cikin haɗari a yau na iya dawowa kan lokaci. Littafin Ja ya jaddada cewa mutane sune farkon wadanda suka yi tasiri ga raguwar halittu.
Dogon doki mai hanci
Eraramar kifin whale (baƙar fata mai kisa)
Maras amfani da fuka-fukai
Dabbar Atlantika
Grey dolphin
Dabbar Indiya
Lake dabbar dolfin
Kaluga
Kangaroo Jumper Morro
Vancouver Marmot
Tsuntsayen baƙar fata na Delmarvian
Marmotiya ta Mongoliya
Marmot Menzbier
Yutas prairie kare
Tsuntsayen Afirka
Zomo mara wutsiya
Hawa kurege
Sanfelip hutia
Hutia mai kunnuwa
Chinchilla
Chian gajeren gajere chinchilla
Lafiya mai kyau
Dwarf jerboa
Turkmen jerboa
Biyar-dwarf jerboa
Selevinia
Beran ruwa karya
Okinawan linzamin kwamfuta
Bukovina tawadar bera
Sterwanƙarar hamster
Hamster hamster na azurfa
Girman jirgin ruwa
Mousearjin linzamin Transcaucasian
Beyayar Asia
Babban jirgin ruwan yaƙi
Jirgin ruwa mai ɗamara uku
Jirgin ruwan frill
Katuwar dabba
Haɗuwa ta haɗu
Chimpanzee gama gari
Orangutan
Mountain gorilla
Pygmy chimpanzee
Siamang
Gorilla
Gibbon Muller
Gibbon Kampuchean
Piebald tamarin
Gibbon mai farin hannu
Gibbon na azurfa
Dwarf gibbon
Gibbon hannu mai baki
Gibbon da aka yi wa baƙar fata
Nemean langur
Roxellan Rhinopithecus
Nilgirian Tonkotel
Mai finer zinariya
Mandrill
Nono
Magot
Zaki makala zaki
Koren launi
Black colobus
Zanzibar colobus
Saimiri mai ja da baya
Biri mai launin rawaya
Biri mai wawa
Saki mai farin fari
Gwaggon biri
Bald uakari
Koate Geoffroy
Baki koata
Koata mai haske
Columbian yaya
Oedipus tamarin
Imarin sarki
Tafarin farin kafa
Marmoset na zinariya
Marmoset mai kalar zinare
Marmoset mai kunnen fari
Tarsier na Filipino
Hannuna
Tsakar gida indri
Lemur mai yatsu mai yatsu
Lemur Coquerel
Mouse lemur
Farar lemur
Lemur Edwards
Lemur mai ja mai iska
Leford baki Sanford
Red-fuska baki lemur
Lemur mai ruwan kasa
Lemur mai kambi
Katta
Yammacin lemur
Grey lemur
Fat tailed lemur
Poananan ppwaro
Guam Flying Fox
Babban shrew
Haiti ɗan faskara
Jemage mai naman alade
Kudancin kogin doki
Kogin bakin teku na Rum
Rabananan Rabbit Bandicoot
Roy-Rufi Bandicoot
Marshewa anteater
Douglas 'Marsupial Mouse
Proekhidna Bruijna
Bugun linzamin kwamfuta
Ratananan bera
Gabas ta Tsakiya ta Australia
Damisa mai dusar ƙanƙara (Irbis)
Barewa na David
Brown kai
Juliana 'Yar Sarauta
Manyan haƙoran Caucasian
Pyrenean desman
Muskrat
Kwarkwata couscous
Matan Queensland
Ara zogale kangaroo
Wallaby Parma
Gaangaroo mai ɗan gajere
Taguwar kangaroo
Macaw shuɗi
Mujiya
Kurciya Kukuru Sokorro
Beaver
Kammalawa
Jerin Jajayen Jini da jinsin ya fada cikin ya danganta da girman yawan mutane, yawan su, ragin da suka gabata, da kuma yiwuwar bacewa a yanayi.
Masana kimiyya sun kirga yawan kowane nau'in a wurare da yawa a duniya kamar yadda zai yiwu kuma su kimanta yawan jama'a ta amfani da hanyoyin ƙididdiga. Sannan an tabbatar da yiwuwar bacewa a cikin yanayi, la'akari da tarihin jinsin, abubuwan da yake bukata na muhalli da kuma barazanar.
Masu ruwa da tsaki kamar gwamnatocin kasa da kungiyoyin kare muhalli suna amfani da bayanan da aka gabatar a cikin littafin Red Book domin fifita kokarin kare halittu.
