Buying & living
One or two Chihuahuas? The honest maths of a second dog
First, the rule that decides it for most homes: HDB allows only one dog per flat. Then the honest bit, littermate syndrome, staggering ages, and the doubled cost and time.
Nelson and Kim, Curious Tails · AVS licence AS24J00046· Updated 24 July 2026
Should I get one or two Chihuahuas?
An HDB flat is approved for one dog only, so two Chihuahuas is lawful just in private housing. Even then, avoid two puppies at once: raise one to confident adulthood, then stagger the ages to sidestep littermate syndrome. A second dog roughly doubles cost, time and dental.
Read this first: HDB allows only one approved dog
Before any discussion of company, cuteness or littermates, there is a rule that decides the question for most Singapore households outright. An HDB flat is approved for one dog, and only one. The Chihuahua is the smallest HDB approved breed, which is wonderful, but the approval is for a single dog per flat, not a pair. So if you live in an HDB flat, "one or two Chihuahuas" is not really a preference; two is simply not permitted.
Keeping two Chihuahuas legally therefore means private housing, a condo or landed home, where the one-dog-per-flat rule does not apply. This is the first fork in the road, and it is a hard one. There is no point falling in love with the idea of a bonded pair if your home can only lawfully hold one, and every dog in Singapore must also be AVS-licensed regardless.
If you are in private housing, or planning to be, then the second-dog question is genuinely open, and the rest of this guide is for you. If you are in an HDB flat, the honest answer is one, done beautifully, and our HDB guide covers exactly how that works.
The one-dog rule, plainly
- HDB flats are approved for one dog only, the Chihuahua included
- Two Chihuahuas is lawful only in private housing (condo or landed)
- Every dog must be AVS-licensed regardless of housing type
- Do not plan a pair for an HDB flat; plan one dog, done well
The dream of two, and the reality of littermate syndrome
The picture in your head is two Chihuahuas curled together, keeping each other company while you are out, entertaining each other, halving the loneliness. Sometimes it works out that way. But raising two puppies together, especially two from the same litter, carries a well-known risk that trainers call littermate syndrome: the two bond so tightly to each other that they struggle to bond with you, become anxious when separated even briefly, and can be far harder to train as a unit than either would be alone.
The dogs feed off each other. One barks, both bark. One is nervous of a stranger, both learn to be. House-training and socialising, already the work that makes or breaks a Chihuahua, become twice as hard because your attention is split and the puppies are looking to each other rather than to you. The intense one-person bond that makes this breed so rewarding can be diluted when a puppy has a full-time canine shadow instead.
None of this means two dogs cannot work. It means two puppies raised simultaneously is the hardest possible version, and the version most likely to produce two under-socialised, over-attached, difficult dogs rather than one lovely pair.
Two puppies at once is not double the joy and double the work. It is often double the work and a fraction of the bond.
If you do want two: stagger the ages
The sensible way to build a two-dog household in private housing is to stagger the ages rather than bring home two at once. Raise your first Chihuahua properly: socialise it, train it, let it form its bond with you and settle as a confident adult. Then, a year or two later, add a second puppy to a home that already has a calm, well-trained elder to learn from.
This sidesteps littermate syndrome almost entirely. The older dog models good behaviour, your training attention is not split between two blank slates, and each dog gets its own foundation with you before it has a canine companion. It also spreads the cost and the intense early work across time rather than doubling everything in one exhausting stretch.
Whether to match or mix sexes is a smaller question than people think, and our male-versus-female guide covers it; broadly, a sterilised pair of either combination tends to settle well, and temperament compatibility matters more than the sex pairing. What matters most is the gap in age and training, not the plumbing.
The staggered-pair approach
- Raise and fully train the first dog to confident adulthood
- Add the second puppy a year or two later
- Older dog models calm behaviour for the newcomer
- Training attention is never split between two blank slates
- Sterilise both; temperament fit matters more than sex pairing
The honest maths: cost, time and whether you should
A second dog roughly doubles the running costs, food, the annual vet visit, boosters, grooming, and crucially the dental care that defines this breed’s long-term budget. It also doubles the time: two lots of tray-training, two lots of socialising, two dogs to exercise and handle gently, and, in a private home, two dog licences to keep current. None of that is a reason not to, but it should be a clear-eyed sum, not an impulse.
Ask yourself honestly why you want two. If it is to keep the first dog company while you work long hours, a second Chihuahua is not a substitute for your presence, and two lonely dogs are not better than one, they are just two. If it is because you genuinely have the space, the time and the budget to raise two well, staggered, then it can be a joy. The Chihuahua’s devotion scales, but only if each dog gets enough of you.
Our steer: in an HDB flat, one, without hesitation, and done to the fullest. In private housing, one first and a second later if you truly have the capacity. If you want to talk it through for your specific home, WhatsApp us at +65 8220 6408; we would rather help you get the number right than sell you a second puppy you will struggle to raise.
One
per HDB flat (hard rule)
2×
cost, time and dental
1–2 yrs
ideal age gap for a pair
Private
housing needed for two
Keep exploring
Frequently asked questions
Can I keep two Chihuahuas in an HDB flat?
No. An HDB flat is approved for one dog only, the Chihuahua included. Keeping two Chihuahuas legally requires private housing such as a condo or landed home. Every dog must also be AVS-licensed.
Is it better to have one or two Chihuahuas?
For most Singapore homes the answer is one, both because of the HDB one-dog rule and because two puppies raised together is the hardest version. In private housing, one first and a staggered second can work well.
What is littermate syndrome?
It is when two puppies raised together bond so tightly to each other that they struggle to bond with you, become anxious when separated, and are far harder to train and socialise as a pair.
How do I avoid littermate syndrome?
Do not raise two puppies at once. Stagger the ages: fully train and settle your first Chihuahua, then add a second a year or two later, so an established, calm dog models good behaviour.
Does a second Chihuahua double the cost?
Roughly, yes. Food, the annual vet visit, boosters, grooming, dental care and a second licence all double. The time cost doubles too, from tray-training to socialising to gentle handling.
Will a second dog keep the first one company?
Sometimes, but a second Chihuahua is not a substitute for your presence if you work long hours. Two under-attended dogs are not better than one. Get a second dog because you have the capacity, not to outsource company.
Should I match or mix the sexes of a pair?
It matters less than people think. A sterilised pair of either combination tends to settle well, and temperament compatibility matters more than the sex pairing. The age and training gap matters most.
Meet your Chihuahua
Come say hello at Balestier
2 Balestier Road #01-701, Singapore 320002 · Weekdays 12pm–6pm · Weekends 10am–6pm. Or message us first: tell us about your home and routine, and we'll tell you honestly if a Chihuahua fits.
Still deciding?
Read the price guide first: every dollar explained, no surprises at the shop.
See the price guide