So my Tikki is doing this thing where she will grab my fingers, rub her head, bite me, and moves around like she is choking and sounds like she is panting. this is the second time she has done this. i want to laugh about it but is this something serious? when she grabs my finger she will not let go until she is done. her grip is so strong that it really hurts. thats the only time she grips that hard.