Robot vacuum for pet hair and the tangling problem.
Most robot vacuums pick up pet hair perfectly well. The difference between a good one and a frustrating one is what happens to that hair once it is inside the machine.
Long hair wraps around a bristle brush and around the wheel axles. A robot that needs hair cutting off it every week will quietly stop getting used, regardless of how well it cleans.
PowerDetect 2-in-1
Built around the tangle problem
Anti-tangle brush designs are the specific answer to long pet hair, and they matter far more than peak suction numbers for homes with a shedding dog or a long-haired cat.
Dreame L40 Ultra
Strong all-rounder for heavy shedding
Combines high suction with a self-emptying dock, which matters more with pets than without: a small onboard bin fills quickly during shedding season and a robot with a full bin cleans nothing.
Brush design beats suction figures
Suction is marketed heavily and rarely the limiting factor for hair. Any current robot has enough to lift hair off a hard floor. What varies is whether the brush lets that hair pass through to the bin or winds it tighter with every rotation.
Rubber or silicone brushes with anti-wrap geometry are the feature worth paying for. Traditional bristle brushes grab hair and hold it, which is exactly what you do not want.
The bin fills faster than you expect
During shedding season a robot in a home with a large dog can fill its bin in a single run. Once full it keeps driving around achieving nothing, which is how people conclude their robot is useless.
A self-emptying dock is close to mandatory with heavy shedders. It converts a daily chore into a monthly one, and it is the single feature most likely to keep the robot in regular use.
Allergies change the calculation
If anyone in the house reacts to pet dander, filtration matters as much as pickup. A sealed air path matters more than filter grade, because an unsealed machine leaks fine particles back into the room regardless of what filter it carries.
Emptying is the other exposure point. A dock that seals the bag as you remove it is worth more to an allergy sufferer than any specification on the robot itself.