This is a possessive paradigm for the animate noun poos ‘cat’.

This the paradigm for the singular possessed object, i.e. ‘cat’:

Possessive paradigm for ‘cat’
  Blackfoot word English Person
nitohpóósiima ‘My cat’ 1SG
kitohpóósiima ‘Your (singular) cat’ 2SG
otohpóósiimi ‘His/her cat’ 3SG
nitohpóósiiminnaana ‘Our (not including you) cat’ 1PL
kitohpóósiiminnoona ‘Our (including you) cat’ 21
kitohpóósiimoaawawa ‘Your (plural) cat’ 2PL
otohpóósiimoaawayi ‘Their cat’ 3PL

This is the paradigm for the plural possessed object, i.e. ‘cats’:

Possessive paradigm for ‘cats’
  Blackfoot word English Person
nitohpóósiimiksi ‘My cats’ 1SG
kitohpóósiimiksi ‘Your (singular) cats’ 2SG
otohpóósiimiksi ‘His or her cats’ 3SG
nitohpóósiiminnaaniksi ‘Our (not including you) cats’ 1PL
kitohpóósiiminnooniksi ‘Our (including you) cats’ 21
kitohpóósiimoaawaiksi ‘Your (plural) cats’ 2PL
otohpóósiimoaawaiksi ‘Their books’ 3PL