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Kit Sunde
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As was brough up on in Is the use of parachutes supported by peer-reviewed papers? The asker Andrew Grimm actually pointed to a study from 1987 which is widely reported (it's paywalled so I can't check myself) to say that not only do cats survive terminal velocity, but that their chance of survival increase over some shorter distances. That said the actual study cites that the cats falling from buildings had a 90% survival rate (after treatment), but also a lot of injuries. From the abstract:

High-rise syndrome was diagnosed in 132 cats over a 5-month period. The mean age of the cats was 2.7 years. Ninety percent of the cats had some form of thoracic trauma. Of these, 68% had pulmonary contusions and 63% had pneumothorax. Abnormal respiratory patterns were evident clinically in 55%. Other common clinical findings included facial trauma (57%), limb fractures (39%), shock (24%), traumatic luxations (18%), hard palate fractures (17%), hypothermia (17%), and dental fractures (17%). Emergency (life-sustaining) treatment, primarily because of thoracic trauma and shock, was required in 37% of the cats. Nonemergency treatment was required in an additional 30%. The remaining 30% were observed, but did not require treatment. Ninety percent of the treated cats survived.

The Straight Dope details how far the cats fell which mentions terminal velocity:

But here's the weird part. When the vets analyzed the data they found that, as one would expect, the number of broken bones and other injuries increased with the number of stories the cat had fallen — up to seven stories. Above seven stories, however, the number of injuries per cat sharply declined. In other words, the farther the cat fell, the better its chances of escaping serious injury.

The authors explained this seemingly miraculous result by saying that after falling five stories or so the cats reached a terminal velocity — that is, maximum downward speed — of 60 miles per hour. Thereafter, they hypothesized, the cats relaxed and spread themselves out like flying squirrels, minimizing injuries. This speculation is now widely accepted as fact.

Kit Sunde
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