Sitio realizado por aficionados a la observación de aves desde 10 de enero 2006
Thick-tailed Opossum - Lutreolina crassicaudata
Vulgar names may cause great confusion as in this case. The Spanish word "comadreja" was assigned to our opossum due to the similarity of these two species and so it stayed. They only share the name and their external similarity. In fact, they belong to two different groups inside mammalia. The weasel of Europe is a placental (the offspring is nourished through a placenta in the uterus till full develoment) and our opossum is a marsupial (the placenta is poor and full development must be completed outside), though in this case it is not known for certain if the abdominal bag functions like that.