A "sex doll" is a lifelike toy or mannequin designed for sexual purposes, often used by individuals as a form of masturbation or companionship. Full definition
In addition to the more standard boarding and grooming, startups are now offering niche products and services, including wearable fitness trackers, game consoles, and even sex dolls. (inc.com)
That is something that is up to the user of a realistic sex doll, but in realism, yes they can to an amount. (adultfindout.com)
After all, he says, some people who own sex dolls feel they are in love with them. (newscientist.com)