When a cat's nails grow long, they need to be trimmed. Otherwise, leaving them unattended can pose a potential threat to furniture and the cat itself. Of course, trimming a cat's nails isn't always easy. If your cat is used to you trimming its nails, the process might be relatively simple. However, if your cat consistently resists nail trimming and refuses to calm down no matter what you try, you'll have to ask someone else to help you trim your cat's nails. 
So, how can you trim a cat's nails with someone else's help?
1. Choose someone the cat knows and trusts.
Don't let strangers or unfamiliar people help you, otherwise your cat will be even more frightened. Getting your cat used to nail trimming sounds nice, but in reality, many cats resist every time they have their nails trimmed, and you may need someone else's help.
2. The assistant should hold the cat to prevent it from running around.
You can stand facing each other across a table. Both of you should speak calmly and reassure the cat. Have your assistant soothe the cat, gently holding its body to prevent it from running around, but without hurting or frightening it.
3. One hand is holding the cat's paw.
When holding the paw, press down on the paw pads to help the cat straighten its paws. If the cat continues to fuss, wait until it calms down before separating the paws.
4. Trim your cat's nails as usual.
While you're trimming the cat's nails, your assistant should continue to distract the cat. Following the instructions in the previous section will allow you to trim the cat's nails smoothly without hurting it. When finished, reward the cat handsomely.
5. Regularly check your cat's nails.
Every cat's nails grow at a different rate, but generally, trimming them once every two weeks or once a month is sufficient. This prevents the nails from becoming too long, splitting, or breaking. Cats will naturally file their nails down to maintain optimal condition, but you should still keep an eye on them. They might be dragging around with split nails, which you can help trim and shape.
Pay special attention to older cats, as their nails are thicker and sometimes indent into the paw pads. Check them weekly and trim the nail tips if necessary. This is much better than letting the nails overgrow and compress the paw pads. If the nails are compressing the paw pads, take your cat to the vet; it may need antibiotics.
How to get your cat to enjoy nail trimming:
Find a comfortable spot and place your cat on your lap. Don't rush to trim your cat's nails. First, gently stroke your cat and talk to it to soothe its emotions. Then, start trimming its nails. After trimming each nail, stroke your cat to keep it relaxed and calm.
Trim your cat's nails quickly. If your cat starts to get agitated, let it go, even if you've only trimmed one or two paws. You can continue later. Reward it with playtime or special attention so it develops a positive association with nail trimming.
Precautions:
1. Long-haired cats' paws are easier to trim when they are wet.
2. Most cats have two dewclaws (one on each of their front legs). They are located on the inside of the front legs (below the wrist joint) and look like little fingers. Cats don't use their dewclaws often and don't rub them, so they can easily overgrow. If your cat is young and healthy, you should have their dewclaws checked monthly.
3. Rather than cutting too deep, it's better to cut shallower, but make several cuts. If you cut too deep, it will be more difficult to trim later.
