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Most preventable cat-care mistakes come down to treating cats like small people, overlooking a change in routine, or leaving a tempting hazard within reach. Avoid these 11 risky habits—and contact a veterinarian promptly when medication, lily exposure, trouble urinating, or a swallowed object may be involved. The list is a safety guide, not a substitute for advice tailored to your cat.
What should cat owners never do?
Do not give a cat medication without veterinary direction, expose it to lilies, ignore urinary changes, or try to solve a serious health concern with a home remedy. Other preventable risks include clipping teeth, feeding an unbalanced diet, using hands for rough play, traveling with an unsecured carrier, and leaving small string-like items where a cat can swallow them.
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These cautions are not a judgment of owners: some hazards are easy to miss, and cats may hide discomfort. The useful response is to make the safer choice easy at home and know which signs warrant a call. The Catster article behind this checklist was updated on the page as of June 19, 2025; the medical cautions below also draw on FDA and Cornell University College of Veterinary Medicine guidance.
1. Don’t give human medicine—or another pet’s medicine
A drug that is safe for a person or another animal may be dangerous for a cat. Give medication only when a veterinarian has prescribed it or specifically directed its use for this cat, and follow the stated dose and instructions. The FDA warns against self-treating pets with human pain relievers; acetaminophen is fatal to cats.
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If your cat seems painful or unwell, call the veterinary clinic rather than reaching for a human medicine cabinet or sharing a prescription between pets. If the cat has already received a medication without direction, contact a veterinarian promptly and tell them what was given and when. Don’t guess at a dose or wait for symptoms before asking for advice.
2. Don’t clip a cat’s teeth
Clipping a tooth is not a do-it-yourself solution for biting, an unusual-looking tooth, or a concern about alignment. Catster warns that clipping can cause pain and permanent damage. A veterinarian should examine the cat and advise what, if anything, needs to be done.
Trying to trim a tooth at home can turn a concern that needs assessment into an injury. If a tooth looks misaligned or your cat’s bite worries you, arrange a veterinary evaluation rather than using household tools or attempting to reshape it yourself.
3. Don’t let lilies near your cat
Keep lilies away from cats, and treat suspected contact or ingestion as urgent. Cornell’s common-hazards guidance warns that even a tiny ingestion can lead to life-threatening kidney failure. Contact a veterinarian immediately if you think your cat has been exposed.
The danger is serious enough that waiting to see whether the cat appears ill is not a safe plan. Cornell Feline Health Center director Dr. Bruce Kornreich has said, “Even one bite of any part of the Easter lily plant can induce kidney failure and, if not treated very quickly, death.” See Cornell’s lily warning for its discussion of the risk. When exposure is possible, call promptly rather than relying on a home remedy.
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4. Don’t impose a vegan or vegetarian diet
Cats are obligate carnivores and rely on nutrients found in animal products, according to Cornell’s feeding guidance. A diet chosen to fit a person’s preferences should not come at the expense of a cat’s nutritional needs.
Ask your veterinarian about a diet appropriate for your cat and make sure it provides complete, balanced feline nutrition. If you want to change what you feed, discuss the plan first—especially when your cat has a health concern or a prescribed diet. Avoid assuming that a label or a homemade recipe is nutritionally suitable simply because it excludes or includes a particular ingredient.
5. Don’t use your hands for rough play with a kitten
Use toys to direct chasing and pouncing away from hands. Catster recommends interactive, chaser, and wand-style toys as safer play alternatives. A wand toy lets you guide the action while keeping the toy—not your fingers—the target.
Choose an appropriate toy for your cat’s size and play style, supervise play, and put string-like toys away after the session. The goal is not to stop energetic play; it is to make the object being chased a toy rather than a hand. This is especially useful with kittens, when rough play can otherwise become the routine way they engage with people.
6. Don’t assume your cat enjoys a costume
Some cats may find costumes uncomfortable or stressful, and individual cats respond differently. If dressing your cat is not clearly welcome, skip the outfit rather than making the animal tolerate it for a photo.
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Catster suggests a photo prop or editing the image as alternatives. These options let you make a themed picture without putting clothing on the cat. If you do use anything around your cat for a photo, keep the cat’s comfort and ability to move freely ahead of the picture.
7. Don’t travel in a carrier you haven’t checked
Before travel, inspect the carrier’s zippers and fasteners and check that its lid and base fit securely. Choose a carrier suited to your cat, then make sure it is closed and secure before moving the animal. A quick check can catch a loose closure or poor fit before the carrier is in transit.
Do not assume a carrier is safe just because it was secure on a previous trip. Recheck it before each journey, particularly if it has been stored, moved, or assembled since its last use. If a fastener or the fit of the carrier is questionable, resolve that before putting your cat inside and setting off.
8. Don’t ignore changes in urination
Changes in litter-box habits deserve attention. Watch for avoiding the box, making frequent visits, staying there longer, passing only small amounts, or vocalizing while trying to urinate. These signs can indicate a urinary problem; Cornell’s feline lower urinary tract guidance stresses that a suspected urethral obstruction is a true emergency requiring immediate veterinary attention.
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9. Don’t assume dry food alone is right for every cat
Make sure your cat has access to clean, fresh water and nutritionally complete food. Catster recommends moisture-rich food, but there is no universal wet-to-dry ratio established here; Cornell’s feeding guidance supports fresh water and complete nutrition, while an individual cat’s health and veterinary advice should guide food choices.
In other words, don’t treat “only dry food” as a diagnosis or make a major diet change based on a one-size-fits-all rule. Discuss your cat’s food and water needs with a veterinarian, particularly if you are concerned about hydration, health, or whether the current diet is appropriate. The priority is an individually suitable diet that remains complete and balanced.
10. Don’t slash calories suddenly to make a cat lose weight
Do not start an extreme calorie restriction or apply an internet formula to your cat without veterinary guidance. Catster warns that rapid restriction can lead to hepatic lipidosis and recommends involving a veterinarian in weight loss. A plan needs to account for the individual cat rather than rely on a general percentage.
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Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.11. Don’t leave hair ties and similar items within reach
Put hair ties and other small, string-like objects away, and don’t offer them as toys. Cats may swallow them; Catster warns that ingestion can lead to emergency surgery. Store these items where your cat cannot get to them, rather than relying on noticing them before play turns into chewing.
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After supervised play, put string-like toys away as well. If you suspect your cat has swallowed a hair tie or similar object, contact a veterinarian for advice promptly rather than waiting for the item to pass or trying to manage the situation at home.
How can you make these cautions practical at home?
Use a short safety routine to reduce the most avoidable risks:
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- Keep hazards out of reach: store medication, hair ties, and string-like items securely, and keep lilies away from the cat.
- Make play safer: use interactive or wand toys instead of hands, supervise play, and put string-like toys away afterward.
- Check before travel: inspect carrier closures and the lid-to-base fit before each trip.
- Watch routines: notice changes in urination and ask a veterinarian about diet or weight concerns before making major changes.
- Act quickly on urgent risks: call a veterinarian immediately for suspected lily exposure or urinary obstruction, and seek guidance if your cat has received an unapproved medication or may have swallowed a small object.
These checks cannot prevent every health problem, but they help separate routine decisions from situations that need prompt professional attention. When you are unsure whether an exposure or symptom is urgent, contact a veterinary clinic and explain what happened rather than trying an unverified treatment.
Frequently Asked Questions
Is wet food required for every cat?
The sources here do not establish a universal wet-to-dry feeding ratio. Keep fresh water available, choose complete nutrition, and ask your veterinarian what food suits your cat’s health and needs.
Can a cat lose weight safely with a calorie target found online?
An online percentage cannot account for an individual cat’s health or circumstances. Ask a veterinarian to guide any weight-loss plan rather than starting a sharp restriction on your own.
Should I call an online veterinarian if my cat may have a urinary blockage?
Suspected urethral obstruction is an emergency that needs immediate veterinary attention. Do not let an online consultation delay urgent care; contact a veterinary clinic or emergency service promptly.
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Contact a veterinarian promptly for advice, even if the cat seems well. Do not try to induce vomiting or wait for the item to pass without veterinary direction.
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