heed

It may be possible to desensitize a cat to being petted for extended periods.  … A safer solution is to consistently limit petting time, and to heed the cat's cues that she's had enough. —Cat Watch, August 2008

However, he should heed an axiom from the pretelevision age: physician, heal thyself. —George F. Will, Newsweek, 17 Mar. 1986

In-line skating is not for everyone, and even those for whom it is ideally suited can skate into trouble, especially if they fail to heed safety precautions. —Jane E. Brody, New York Times, 2 May 1991

She failed to heed the warnings.

if we had heeded the ranger's advice, we might not have gotten lost

Neither the British ministry nor the British Parliament welcomed American voices in determining policy in 1763, or ever. The British government paid little heed to the public press on either side of the water. —Edmund S. Morgan, New York Review of Books, 16 Nov. 2006

She retrained as a doctor and it was through her pioneering research with cancer patients in the early 1960s (she showed how narcotics could be used without adverse effect) that the medical profession began to take heed. —Kate Kellaway, Prospect, January 2003

Imagine swimming along with playful seals and then diving down to see such rarities as batfish.  … Fleets of hammerhead sharks pay divers no heed, nor do the penguins move out of the way. —Town & Country, January 1983

took heed of the student's learning disability so as to arrive at reasonable expectations for him

pay heed to what you're doing with that knife while you're talking