The Ekottara Āgama and the Saddharmasmṛtyupasthāna Sūtra explain that asura are divided among the realms of ghosts and animals.
ðɪ ˌɛkətˈɑːɹɹə æɡˈɑːmə ænd ðɪ ˈɛs ɐ dˈiː dˈiː ˈeɪtʃ ɐ ˈɑːɹ ˈɛm ɐ ˈɛs ˈɛm lˌɛɾɚwˈʌnˈiːfˈaɪvbˈiː tˈiː wˈaɪ jˈuː pˈiː ɐ ˈɛs tˈiː ˈeɪtʃ ˌeɪmˈækɹˌɑːn ˈɛn ɐ sˈʌtɹə ɛksplˈeɪn ðæt ɐsjˈʊɹɹə ɑːɹ dᵻvˈaɪdᵻd ɐmˌʌŋ ðə ɹˈɛlmz ʌv ɡˈoʊsts ænd ˈænɪməlz.