The Russell Terrier is the espresso shot of the dog world — tiny, explosive, and guaranteed to get things moving. Bursting with energy and enough sass to power a soap opera, this scrappy little pup doesn’t just walk into a room — it launches in, barks, spins in a circle, and then forgets why it came in. These dogs are smart, but with a “what’s in it for me?” attitude that makes training feel like negotiating with a furry rocket. Their alert watchdog instincts kick in whether it’s a burglar or a suspicious-looking leaf. They thrive in active households and will gleefully turn boredom into home demolition. But despite their big personality and turbocharged legs, they’re deeply devoted cuddle bugs at the end of the day — assuming they ever sit still long enough.