Some time ago I stumbled over a picture in the internet showing a cat with two fangs on each side, directly behind each other. In this case they just didn't loose her baby teeth but it aroused in me the idea to create a feline species for my fantasy-world which has two fangs in each quarter of its jaws (so eight instead of four in the whole mouth). The set of teeth for my feline species finaly came out like that (described from middle-front to the back, so one half of each jaw is described, the other halfs are mirrored identical):
Upper jaw: 2* incisors, 1st fang, 1st premolar, 2nd fang, 2* premolar, 1 molar
Lower jaw: 2* incisors, 1st fang, 1st premolar, 2nd fang, 1* premolar, 1*molar
The last two molars/premolars of the upper jaw and the molar of the lower jaw are adapted as carnassials.
(For comparison, a normal cats jaw is like that:
Upper jaw: 3* incisors, fang, 3* premolar, 1 molar
Lower jaw: 3* incisors, fang, 2* premolar, 1*molar
The carnassials are identical.)
The first fang takes the position where in normal cats the third incisor is placed, the second is a little backwards from the usual fang position (there is enough space for the premolar between), so the fangs of one jaw take a trapezoidal form.
So finaly I got stuck with the question: In which hunting styles this set of teeth would give an advantage against other feline preditors?
(I didn't yet define the rest of the body, social behaviour of this species and so on, as I want to adapt them to the outcome of this question. The species shall be feline and at least be as big as a lynx but not bigger then a small tiger.)