When suspects make a run, K9 teams prove why the nose always knows. Rookie K9 Duder gets thrown into the deep end when a high-speed chase explodes into a full-blown foot pursuit.

When fleeing suspects put the public at risk, K9 teams race the clock to shut it down. K9 Haywire rolls in with SWAT, in search of a hit-and-run suspect who vanishes into a residential area.

Fresh out of the academy, rookie K9 Carrier gets the call, but can he score his first apprehension?; in a pounding downpour, K9 Flash stays locked on the scent, tracking a suspect who bolted even after being tasered.

From tangled brush to pitch-black streets, these K9s sniff out danger with precision; after a tense pursuit, K9 Eddie corners a suspect hiding deep in a ravine; across the country, K9 Streeter makes a heart-stopping leap; K9 Riggs corners a double murder suspect; K9 Diesel kicks off his late-night shift by chasing down a hit-and-run perp.

When a suspect panics and runs, the dog smells it instantly. One bad decision leads to a very fast ending. K-9 Jax chases after a suspect accused of stealing a car. K-9 Bane helps bring a multi-state manhunt for one of Philadelphia's most wanted to a shocking end.

When high-speed chases end in foot pursuits. The K9 takes over where engines can't. On Valentine's Day, K9 Igo shuts down a tense standoff before it explodes. K9 Duder teams up with a fellow K9 unit in a takedown that leaves a suspect nowhere to run. K9 Chase proves his name isn't just for show.