The intentions are to cheat, take advantage to oneself, appearing all the time as if one is helpful.

In Mahabharat, the deceitful nature of Sakuni is well known. He always posed as a well wisher of Kauravas but his intention was to wipe off the Kaurava clan.

The story of the tiger posing itself as a deer. The intentions are to cheat, take advantage for oneself, appearing all the time, as if the person is. There are lot of people we see outside who pretend as if they are good people. Actually his intentions are to kill you. He is feigning. There are a lot of stories on this in mitra laabha ex. The jackal appears as a friend and in turn tries to kill the sheep.