Many ways.
If there is a sudden weight lost
If there is a sore and it won't heal
Breathing Problems
Stiffness that is over a long period of time
Bad oder
Not eating/Having trouble eating
Bladder Problems
Lump that is getting bigger
Random Bleeding
But, there is a less chance that cats have cancer than dogs.
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You can tell if your cat has an abscess by examining the area. An abscess will appear as a pus filled sac. Only a visit to the vet for some tests can tell you if your cat has cancer.
take it to a vet
Common signs and symptoms of cancer in cats include lumps or bumps, changes in appetite or weight, difficulty breathing, and lethargy. If your cat is limping, it could be related to cancer if the limping persists, is accompanied by swelling or pain, or if your cat is also showing other signs of illness. It is important to consult with a veterinarian for a proper diagnosis and treatment plan.
There is no connection between cat hair and brain cancer. If cat hair caused brain cancer, there would be warnings made to all pet owners.
no
It makes them loose their hair. (Sometimes makes them puke.) a lot! I know that because I have a cat and she has cat cancer right know.
you can tell if your cat if fat is if her or she is lazy and chubby
to tell a secret
you really can't tell
When a cat has allergies it has an extremely sensitive immune system to everday substances, you can tell if your cat has an allergy if it acts a little funny after it eats.
You can tell a cat is scare because they will scrath / run away if you try to touch them.
a plant gets cancer by a micorwave when it is by it