What are the possessive pronouns in Spanish?

Although possessive pronouns are not used in precisely the same way in Spanish as they are in English, the examples below are roughly equivalent.
Mine: mío, mía, míos, mías 
Example: No me gustan los pollos amarillos. El mío es rojo. (I don't like yellow chickens. Mine is red.)
Yours (singular informal): tuyo, tuya, tuyos, tuyas
Example: ¿Dónde está mi lapiz rojo? La tuya está aquí. (Where is my red pencil? Yours is here.)
His, hers, yours (singular formal or plural formal), its, theirs:
suyo, suya, suyos, suyas
Example:  Mis pantalones son blancas. Los suyos son rojos. (My pants are white. His/hers/yours/theirs are red.)
Ours: nuestro, nuestra, nuestros, nuestras
Example: ¿Te gusta tu coche? No me gusta la nuestra. (Do you like your car? I don't like ours.)
Yours (plural informal): vuestro, vuestra, vuestros, vuestras 
Example: Vuestra casa es muy bonita y grande. (Your house is very pretty and large.) 
As shown in the examples, Spanish possessive pronouns are often preceded by definite articles el, la, los, or las (the English definite article is "the").