The concept called Citta in yoga sutra of Patanjali (YSP) is very close to the term mind, of modern psychology however it has a more comprehensive significance and field for functioning. The Cittais the constituent of Indriyas, Mana, Buddhi and Ahamkara. Indriyas are the organs (sensory and motor organs) of our body, Mind can be an English name given to Mana [if we give the name mind stuff to Citta], Buddhi means intellect or intelligence and Ahamkara means I-am-ness or ego. In simpler form we can say, Mind (Mana), together with the discriminative faculty (Buddhi), and the egoism (Ahamkara) form the group called Antahkarana (the internal instrument). For cognition to occur, Indriyas (organs) has to have interaction with the Antahkarana (the internal instrument). Yoga identifies them as constituent parts of Citta of human. Animals do have Citta but they lack the discriminative faculty Buddhi. I have developed a cognitive model explaining the concept of mind and cognition as explaind in YSP and has discussed the implication of the model too.