Best robot vacuums under $400 for pet hair

Top pick: Roborock Q7 M5+. It's the one I'd buy for a pet household: very strong suction, a dual anti-tangle brush that keeps long hair and fur from wrapping, LiDAR mapping so it actually covers the room, and a dock that holds weeks of debris so you're not emptying it after every run.

Who the others suit:

• iRobot Roomba Max 715 — you want the simplest, most proven pet setup and don't mind emptying the bin yourself.
• Roborock Q10 S5+ — a self-emptying Roborock for less, if you'd rather save than get the strongest suction.
• Roborock Q7 L5 — a no-dock option that still has the anti-tangle brush and LiDAR.
• Teendow 12000 Pa — biggest claimed suction and a long self-empty interval, from a lesser-known brand.
• Budget picks (Tikom, BPMIO, PrettyCare) — small apartments and hard floors; expect weaker pickup on thick carpet.

Whatever you choose, look for a rubber or anti-tangle brush and a HEPA filter — those two matter more than the suction number for pet hair.