For injured animals in Greece, MIAFYSI at www.inaturenet.org has contact info for Athens veterinarians, including some who specialize in exotic animals. They support a wildlife hospital on the island of Paros.	www.inaturenet.org
www.interpet.gr is a Greek-language site with lots of information on veterinarians in Athens and elsewhere. The link is to their list of duty veterinarians for weekends:	www.interpet.gr