Yup - most likely boxwood. Under certain conditions it will produce an aroma very similar to cat urine. Not nice!!

If you want a similar looking hedge-type plant, look at Japanese holly, Ilex crenata. These should be good to zone 5, are more tolerant of a range of planting conditions than boxwood and do not discolor in winter. And they have no particular odor, either good or bad.

If you could reveal your zone and sun and soil conditions, there may be some other good choices as well.

You nailed it with the cat urine smell! I live in New Jersy and the area gets sun about half the day. Thanks for your recommendations! Either one will be a big improvement although if I could get something with a nicefragrant smell I would love it.