Safely Introduce Cats 2025: Vet Approved Multi Cat Tips 🐱✨

By Dr. Duncan Houston BVSc

Thinking of getting a second cat? Or maybe you’ve rescued a kitten and your current feline is... less than thrilled. Introducing cats is delicate, and doing it wrong can lead to long-term aggression, stress, or litter box issues.

I’m Dr. Duncan Houston, veterinarian and founder of Ask A Vet. Here’s how to introduce cats the right way—slowly, safely, and with their feline dignity intact.

📅 How Long Does It Take for Cats to Get Along?

• Some cats tolerate each other in a few days
• Others may take weeks or even months
• Success depends on age, personality, and proper introductions

🚫 Mistake to Avoid: Direct Introduction on Day One

• Do not let cats “sort it out” without supervision—it can cause trauma or fear-based behavior

✅ Step-by-Step Introduction Plan

Step 1: Isolation

• The new cat has its own room with food, water, litter, toys, and a bed
• Let them settle in for 3–7 days before any interaction

Step 2: Scent Swapping

• Exchange bedding or gently rub both cats with the same cloth
• Allows cats to get used to each other’s scent without face-to-face interaction

Step 3: Door Interactions

• Feed both cats on opposite sides of the closed door
• Progress to using a baby gate or a cracked door if they’re calm

Step 4: Supervised Visits

• Start with short sessions—keep the new cat in a carrier if needed
• Distract with treats, toys, or wand play to reduce tension

Step 5: Gradual Freedom

• Allow short, open-room access with both cats present
• Watch body language—flattened ears, growling, or stalking means slow down

🐾 Tips to Improve Success

• Have one litter box per cat, plus one extra (spread out!)
• Use vertical space—cat trees, shelves, and hideouts reduce competition
• Reward calm behavior with treats and play
• Feliway diffusers help reduce anxiety during transition

🔁 What If They Fight?

• Use a loud clap or pillow toss to interrupt
• Never physically intervene—risk of injury
• Separate immediately and return to the previous step for a few days

🔗 Helpful Tools from Ask A Vet

• Felt Cat Caves – Give both cats safe, separate hideouts to retreat to
• Ask A Vet – Get custom advice if your cats aren’t adjusting or aggression occurs

📋 Summary Excerpt

Adding another cat? A vet shares the safest way to introduce new cats, avoid fights, and build long-term harmony in a multi-cat household.

❓ FAQs

• Q: Can two male cats get along?
  A: Yes—especially if neutered and introduced slowly. Personality matters more than gender.
• Q: Is hissing normal during introductions?
  A: Yes. Occasional hissing is expected. Persistent growling or swatting needs a slower pace.
• Q: What if they never get along?
  A: Some cats may only tolerate each other from a distance. Create zones and use vertical space to avoid conflict.