Frequent trips to the litter box indicate that your cat is struggling to toilet normally. If your cat keeps trying to pee but only a little comes out, it’s a sure sign that something is wrong. Bring him or her to the veterinarian as soon as possible.
If your cat keeps going to the litter box but nothing happens at all, he or she may be dealing with a complete urethral blockage. In this case, seek emergency veterinary care immediately. Just a few hours of hesitation could be fatal.