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Here's probably more than you'll ever want to know about feline hairballs. Hair balls - or trichobezoars, to the veterinarily inclined - rank among the most common ailments suffered by cats and, subsequently, by their owners.
"Usually you find them in the morning, with your bare feet," says Ed Zigon Jr., a lab technician who lives with six cats in Morrisville. For people who own cats - a third of all American households, half of those with two or more - hair balls are an issue that keeps coming up.