Has he always been this way? This isn't normal behavior. Something is wrong with your tiger. Please take kitty to the vet for a full assessment including blood work. Good nutrition is essential for all. Fatal heath problems could take place if your cat doesn't start eating real food. What foods have you tried?
oh honey you sure can't be feeding kitty friskies party mix and milk for a diet.....of course like kids if they can get fed candy they'll never eat their regular boring meals....Please get kitty on a good quality canned food...it may take some 'bribery' to get her to eat something other than junk but she needs too and right away before she gets really ill.also contrary to some beliefs milk isn't good for cats!!!!!!!!!! they cannot digest it properly...keep us posted okay....and welcome to our forum.