Langenscheidt GWB D-E 2004 says
afghanischer: Afghan (hound)
but doesn't mention "sighthound", oddly. Neither does Collins:
Windhund: (Hund) greyhound; (Afghanischer) Afghan (hound)
I also couldn't find "sighthound" in Hutchinson's Encyclopaedia, OALD, Chambers 2st century Dictionary or dictionary.com, although it is in the Oxford Dict of Eng: "a hound originally bred to hunt independently from humans, such as a greyhound or whippet".
Grey|hound 1. in England bes. für Rennen gezüchteter Windhund.
Quelle: DUDEN - Deutsches Universalwörterbuch
Windhunde, schlanke, schnelle Jagdhunde, z. B. Barsoi, Greyhound, Whippet.
Quelle: Der Brockhaus in einem Band
"Sighthounds are breeds and types of dogs whose predominant sense is sight, rather than scent. They are usually slim with a deep chest and pointy nose.
Sighthound breeds/types include;
Whippet " http://www.sighthoundsonline.org.uk/about/sig...
Does this cover the same dogs as Windhund? Has anyone got a German dictionary which says Windhunde are those which use sight, not smell?
I suspect that most people have never heard of a sighthound, though, and there are some dictionaries with entries like this:
n : small slender dog of greyhound type developed in England
Source: WordNet ® 2.0, © 2003 Princeton University "
Oxf. Dict of Eng: whippet. a dog of a small, slender breed originally produced as a cross between the greyhound and the terrier..." (no mention of sighthound)
...which is perhaps why Langenscheidt and Collins go for "greyhound".