
The short answer
Train in short daily sessions, teach handling early so lifelong dental care is actually possible, and expect house training to take longer through a Toronto winter than any book allows for. Adopting an adult means the temperament is visible rather than a guess.
The under-training trap
The reason this breed has a reputation for bad manners is not that it cannot learn. It is that nobody is sufficiently put out to teach it. A thirty-kilogram dog that jumps on visitors gets addressed immediately, because it knocks people over. A four-pound dog doing exactly the same thing is mildly funny, so it carries on doing it for a decade and becomes what the breed is famous for.
The same logic covers recall, sofa guarding and pulling on the lead. Small misbehaviour is tolerable, tolerated behaviour becomes habit, and by the time anyone minds, the dog has years of practice behind it. The remedy is unglamorous: decide the rules apply. Chihuahuas are food-motivated and properly bright, five minutes twice a day moves things quickly, and the breed enjoys the work once it starts getting some.
Teach handling before you need it
This is the part that matters most for a Chihuahua and gets skipped most often. The breed carries a full set of teeth in a jaw far too small for them, so dental disease is close to expected and dental care is a lifelong requirement rather than an occasional event. A dog that will let you lift a lip, brush its teeth and hold a paw gets better care for fifteen years. A dog that will not turns every routine job into a sedation appointment.
Build it in small steps and stop early, while the dog is still relaxed. Touch a paw, reward, finish. Days later, hold the paw. Later again, let the clippers exist nearby without using them. One nail is a whole session and counts as success. The same ladder works for tooth brushing and for being examined. Pushing through once to get it over with generally costs weeks of progress and makes the next vet visit worse for everyone. Our Toronto Chihuahua health guide explains why the teeth earn this much attention.
House training against a Toronto winter
Two things make this harder than standard advice assumes. A small dog holds less and needs more trips out than a larger puppy. And in a flat or a tower, every trip is a corridor, a lift and a lobby before anyone reaches grass, which is a long way when a small bladder has already made its decision.
Work to a clock rather than waiting for the dog to ask, since the asking happens moments before the accident. Reward outdoors, immediately, rather than praising once you are back upstairs. Then allow for January: a short-coated dog facing salt, slush and wind will hold on rather than go, and then have an accident inside, which reads as disobedience and is really weather. Plenty of Toronto owners run an indoor pad option through the worst weeks and drop it in spring, and that is a sensible accommodation for a very small animal rather than a failure.
The one-person dog, and the lap-guarding problem
Many Chihuahuas attach hardest to one person and regard the rest of the household as scenery. That is the breed, not a failure of your partner. It turns into a problem when the dog starts guarding that person, usually from a lap, and the household treats it as devotion rather than as a warning.
Spread the good things around: let other people feed, walk, train and treat the dog. Do not let growling from a lap be the household joke, because the dog is rehearsing something that stops being funny. If it has already progressed to snapping at people who approach you, that needs a qualified professional rather than management at home, and the useful question to ask any trainer before booking is what they do when a dog gets something wrong. Anything involving a correction is the wrong answer for a frightened small dog, and that is the settled veterinary position rather than a preference: the American Veterinary Society of Animal Behavior recommends reward-based methods for all training, including behaviour problems.
Recall, and being honest about off leash
A reliable recall is worth building properly. Use a long line somewhere quiet, make coming back pay every time, and never call the dog in order to do something it dislikes, which is how a good recall gets poisoned in a fortnight.
Then be realistic about where you cash it in. Toronto permits off leash only in designated areas and the fine outside one runs up to $615, but the stronger argument is not the fine. A dog this small can be badly hurt in a busy off-leash area by a large dog that meant nothing by it, and a single rough encounter can set a nervous Chihuahua back for months. Designated areas at quiet hours are the version that suits the breed. Our Toronto condo guide covers the licensing and off-leash rules in full.
Browse adoptable Chihuahuas in Toronto
An adult from a foster home arrives with a temperament somebody has already lived with, which beats predicting one.
See Available Chihuahuas →Questions Toronto owners ask
What is a Chihuahua actually like to live with?▼
Devoted to the point of following you room to room, alert, opinionated and considerably more trainable than the reputation suggests. Most bond hardest with one person. They are watchful, which is where the barking comes from, and genuinely clever, which means they learn what you teach by accident just as quickly as what you teach on purpose. They suit a Toronto flat well. The catch is that an under-occupied Chihuahua invents its own job, and the job it picks is usually supervising the corridor.
Are Chihuahuas hard to train?▼
No, they are under-trained. A four-pound dog can jump on visitors, ignore a recall and guard the sofa for a decade without anyone finding it annoying enough to address. The same behaviour in a Labrador is dealt with inside a fortnight. Chihuahuas are food-motivated, quick and like the work, so a few minutes twice a day gets you a long way. Apply the standard you would apply to a big dog and most of the reputation evaporates.
Are Chihuahuas good with children?▼
It depends far more on the children than on the dog. A Chihuahua is small enough to be genuinely hurt by ordinary toddler enthusiasm, and a dog that has been grabbed or dropped once remembers it. With calm older children who understand not to chase, snatch or lift the dog, they usually do well. With very young children they need real supervision and somewhere to retreat that nobody follows them into. Ask the rescue what the dog has actually lived with rather than guessing, because a foster home will know.
How do I house train a Chihuahua in Toronto?▼
Frequency, a fixed schedule, and realism about the bladder involved. Small dogs hold less and need more trips out than a bigger puppy, and in a flat or a tower every trip involves a corridor, a lift and a lobby first. Take the dog out on the clock rather than waiting for a signal, because the signal arrives about four seconds before the accident. Reward outdoors immediately rather than back inside. Expect the winter to slow it down: a short-coated dog will hold on rather than face salt and slush, then have an accident indoors, which looks like a training failure and is really a weather one.
How do I teach a Chihuahua to accept nail trims and tooth brushing?▼
In tiny steps, long before you need it, and stopping while the dog is still comfortable. This matters more for Chihuahuas than for most breeds because dental disease is close to inevitable in a jaw that crowded, so a dog that tolerates having its mouth handled gets better care for its entire life. Touch a paw and reward. Days later, hold it. Later still, let the clippers be present without using them. One nail is a complete session. Forcing it through once to get the job done usually costs weeks and makes the vet visit harder too.
Why does my Chihuahua only like one person?▼
It is a genuine breed tendency rather than something you did wrong. Many Chihuahuas attach hardest to one person and treat everyone else as furniture, and some start guarding that person from other people or dogs. Reduce it by having other members of the household do the good things: feeding, walks, training, treats. Discourage the guarding rather than being flattered by it, because a dog growling at your partner from your lap is rehearsing something you do not want in a year. If it has already reached snapping, bring in a qualified behaviour professional.
Can a Chihuahua learn a reliable recall?▼
Yes, and it is worth the work. Practise on a long line somewhere quiet, make coming back pay every single time, and never call the dog to do something it dislikes, which is the fastest way to ruin a recall. Be realistic about where you use it: Toronto permits off leash only in designated areas, the fine outside one runs up to $615, and a very small dog in a busy off-leash area can be hurt by a large dog with no ill intent at all. Designated areas at quiet hours are the sensible version for this breed.
Do Chihuahuas need training classes, or can I do it at home?▼
Most of the basics are perfectly learnable at home in short daily sessions, and the breed responds well to that. A class earns its money when you want the dog working around other dogs and people, which is exactly the context a small dog finds hardest and the one most owners avoid practising. If you go, choose a trainer who uses reward-based methods and ask what they do when a dog gets something wrong before you book. Anything involving a correction is the wrong room for a Chihuahua.
Is an adult rescue Chihuahua harder to train than a puppy?▼
Usually easier. An adult concentrates for longer than a puppy, is often already house trained, and arrives with a temperament you can assess instead of predict. A foster home can tell you whether the dog settles alone, how it is with other dogs, and whether it has ever guarded anything, none of which comes with a puppy. Old habits can be changed. The idea that an adult dog is finished is not true.
Anxiety and Reactivity →
When the barking is fear rather than manners, and the TTC.
Chihuahua Health Issues →
Teeth, knees, windpipe and heart, and what to budget for.
Chihuahuas in Toronto Condos →
Condo rules, the $25 licence and the lift.
Chihuahua Adoption in Toronto →
Where to look, real costs, and what to ask a foster.
New dog? Start with these care guides
Everything a new adopter needs to set up a safe, happy home.