Small dogs get a reputation they mostly do not deserve. Most small breeds are a pleasure to work with, and they need far less physical handling than a large dog to reach the same level of control. What they do not need less of is training. The owners who struggle are almost always the ones who assumed a ten pound dog would raise itself.
We see how that ends. A man once carried a crate into our reception, set it down, said "train this dog," and walked back out. He had climbed out of bed that morning and stepped in a mess on the floor. Nobody in that story is angry at the dog. They are just worn down, and they have run out of ideas.
A Labrador that pulls drags you into the street. A terrier that pulls is an annoyance you can lift off the ground. Because the consequences are smaller, the training gets postponed, and the dog spends years rehearsing habits nobody ever corrected. Size hides the problem, it does not solve it.
The other pattern we see is emotional. Small dogs are carried, coddled, and rarely asked to do anything. A dog that is never asked to make decisions never learns to make good ones.
Small breeds tend to respond best to a motivational approach. Use food as payment for work done well, and build simple behaviors into longer chains one step at a time. Finish each piece before you move to the next.
When your dog does something you do not want, a calm verbal interruption is usually enough. Harsh corrections tend to backfire on small dogs, because a dog that is intimidated by you stops offering behavior at all, and then you have nothing to reward. Set expectations that match the age and experience of the dog in front of you.
Often it traces back to breeding or early handling, sometimes to a single bad experience. Either way it is built back through slow, positive exposure, not through pressure.
Be careful approaching any small dog that is being carried. Height and the security of an owner's arms make many small dogs far bolder than they would be on the floor. If your dog guards you from the crook of your elbow, put the dog down.
Small dogs sleep lightly and sound off easily. They make genuinely good alarm systems, so the goal is not silence, it is an off switch. Teach what is acceptable through your foundation work first. Tools like bark collars belong inside a training plan built with a trainer, never as a first response.
The bark is usually worse than the bite, but a small dog can still do real damage, and terriers in particular have serious jaws. Catch it early: a firm interruption the moment your dog starts to tighten up is usually enough. Anything that has already escalated to contact needs a trainer, not a home remedy.
Most elimination problems come from the start of a dog's life or from a rushed transition into a new home. Pick one spot, use a consistent word to cue the behavior, reward the moment it happens, and run to a timer instead of waiting for the dog to ask.
Small dogs are wildly capable, and a bored small dog invents work you will not enjoy. Agility, flyball, dock diving, and barn hunt all suit little dogs, and all of them build the focus and confidence that carry back into daily life.
Most of us treat our dogs like our children right up until the moment training is involved. We send our kids to school. We teach them manners, we understand their limits, and we accept that we are the parent rather than the buddy. With dogs we flip it. We expect them to know things nobody taught them, and we hold them to standards nobody explained.
So relax. You are unlikely to ruin anything by going slowly. Take your time, stay consistent, and your little dog will be a much happier project for it.