Yes, you should check what type of nutrients are in the biscuits but you should consult a vet about what diet your cat should have.
If you feed your cat only on cat biscuits you must provide ample water as well.
It can be bad for them. They can either choke on it or be allergic to it. (Yes, cats CAN have allergies). Also, feeding them human food can develop into a bad habit. They may start to jump up on counters and tables eating human food. It's a waist of food and bad for their health.
Cats typically vomit after eating something bad. Another reason could be a hair ball.
i believe that biscuits are somewhat bad for you. they have some sugar and preservatives to preserve them when they are sitting on the store shelf for a year or two. unless you want gross, soggy, moldy, and crumbly biscuits, i would put up with the bad things in the biscuits and eat them. who cares whats in them and its bad. :P
No, in fact eating any sort of sports equipment is bad for any animal.
Cats eating bugs is generally not harmful, but it's important to monitor the types of bugs they consume to ensure they are not toxic or carrying parasites.
Eating only protein is very unhealthy.
No I won't tell you.
Its not that bad.... They only do it if they are not fixed, they do it to mark there territory
Cause it will have a bad taste
I doubt that very much. Cats are very good at barfing up food that is bad for them.
Only if You are mr. Barak Obama
Only if you have a very bad allergy to cats that leads to that.