For plurals you just add an s at the end of each word as in english perro(dog)=perros(dogs) gato=(cat)=gatos(cats) but if the words ends with a consonant then you have to add -es matador(bullfighter)=matadores for the words ending in "z" such as "pez" (fish) you have to change this "z" for a "c" and add -es pez(fish)=peces veloz(fast)=veloces