15 Things You Must Know Before Bringing Home a Rat Terrier Puppy
You clicked because you love those bright eyes and turbo-charged zoomies.
We have lived the Rat Terrier ride—and we want you ready for the fun and the chaos.
Here are the exact things that matter before pickup day, minus the fluff.
1. Rat Terriers Stay Small But Not Tiny
Expect a compact athlete, not a teacup. Minis often land under 13 inches and around 8 to 15 pounds; standards can reach 13 to 18 inches and 15 to 25 pounds.
They are easy to carry and fit city life, but there is plenty of dog in that frame.
2. That Energy Is Real
Plan on 60 to 90 minutes of daily exercise split between brisk walks, training games, and sniffing sessions.
A tired Rat Terrier is a cuddly roommate. A bored one is a redecorator.
3. Prey Drive Comes Standard
They were bred to chase vermin, and that instinct is still strong.
Expect laser focus on squirrels and birds. Respect it with leashes, long-lines, and recall training from day one. Small pets like hamsters are not a safe match.
4. They Are Wicked Smart And Sensitive
Rat Terriers pick up patterns fast but do not thrive under harsh corrections.
Use upbeat, reward-based training and clear boundaries. They read your mood; keep sessions short and end on a win.
5. Socialization Makes The Dog
From 8 to 16 weeks, gently introduce surfaces, sounds, people, and calm dogs.
Pair every new thing with treats. The goal is a curious pup, not a flooded one—quality beats quantity.
6. Barking Happens Without A Job
Alertness is part of the package. Give them a job like mat training, a chew after dinner, or a sniffy walk at dusk to preempt evening bark-fests.
Teach a quiet cue and reward silence. Management now saves neighbor drama later.
7. Digging Is In The DNA
Many Rat Terriers adore excavating. Protect your garden with designated dig zones, sandboxes, or raised beds with barriers.
Give them a spot where digging is a yes, and bury toys there to make it irresistible.
8. Grooming Is Low Lift, Shedding Is Seasonal
The sleek coat needs a weekly rubber brush and a quick wipe-down after adventures.
Expect heavier sheds in spring and fall. Nails grow fast—clip or grind every 1 to 2 weeks to protect joints and posture.
9. Cold And Heat: Short Coat, Big Feelings
They can shiver in chilly weather and overheat on blazing afternoons.
Use sweaters in cold, shade and water in heat, and keep midday outings short. Paw protection helps on hot pavement.
10. Health Matters To Screen For
Work with ethical breeders or rescue groups that prioritize health.
For Rat Terriers, ask about patellar checks, hip and elbow evaluations when age-appropriate, eye exams, and genetic screening for issues seen in terriers such as primary lens luxation where relevant to lines. White-heavy coats can carry a risk of congenital deafness; a BAER hearing test clarifies status.
11. Secure Fences Beat Flexi-Leads
These dogs are crafty when a squirrel taunts them. A solid fence and locked gates beat wishful thinking.
If you do not have a yard, a 20 to 30 foot long-line in a quiet area gives them safe freedom to sprint and sniff.
12. Crate And House Training Go Faster With Routine
Pick a crate they can stand, turn, and lie in comfortably, and make it a snack-filled den.
Take the puppy out after waking, eating, playing, and every 2 to 3 hours at first. Praise the instant they finish outdoors—timing wins house training.
13. Food: High-Quality, Watch The Waistline
Feed a complete and balanced puppy diet and measure portions. Rat Terriers can pack on pounds if exercise dips.
Use part of their meals for training to prevent over-treating. Ribs should be easy to feel, not see.
14. The Right Toys Save Your Shoes
They love to dissect and problem-solve. Stock durable chews, snuffle mats, and puzzle feeders.
Daily Puzzle
A simple kibble puzzle or frozen lick mat takes the edge off before work.
Safe Chew
Offer a size-appropriate, vet-approved chew to satisfy the need to gnaw.
Tug And Fetch
Short, rule-based games channel prey drive and improve impulse control.
Quiet Mat
Teach settle on a mat with chews so you can eat dinner in peace.
15. Breed Fit: Apartment, Kids, Other Pets
Rat Terriers can thrive in apartments with daily outlets and training. Yards are a perk, not a requirement.
With kids, supervise and teach gentle handling on both sides. With cats, success depends on the cat and the individual dog—introduce slowly, use gates, and never force it.
Sviatoslav Oleksiv founded The Pets and Love in 2019. A lifelong pet owner and Rhodesian Ridgeback enthusiast, he writes and edits our guides to help fellow pet parents give their animals the best care.
Every guide follows our editorial standards. This article is for informational purposes only and is not a substitute for professional advice — always consult a licensed veterinarian about your pet's health.