Angels on horseback
Angels on horseback (ángeles a caballo) is a hot appetizer (aperitivo) made of oysters (ostras) wrapped with (envueltas en) bacon.
Devils on horseback
They are a 'darker' (and cheaper) version of angels on horseback. Most recipes contain a pitted prune (ciruela descarozada) stuffed with (rellena con) mango chutney and wrapped in bacon. Instead of prunes, sometimes dates (dátiles) are used.
Pigs in a blanket
In the United Kingdom, "pigs in blankets" refers to small sausages (usually chipolatas) wrapped in bacon. Usually served at Christmas lunch or with roast dinners, pigs in blankets are now considered a traditional part of the Christmas meal. Pigs in blankets can also refer to chipolata sausages wrapped in pastry (masa).
A variation of the recipe in the UK is to use a layer (capa) of bread around the bacon.