El gato is the first in line ,primero, primero,
El gato is the first in line, pri-me-e-ro.
 
El perro is the second in line ,segundo, segundo,
El perro is the second in line, se-gu-un-do.
 
La oveja is the third in line, tercero, tercero,
La oveja is the third in line, ter-cer-er-o.
 
El cerdo is the fourth in line ,cuarto, cuarto,
El cerdo is the fourth in line, cuar-ar-to.
 
El pato is the fifth in line ,quinto, quinto,
El pato is the fifth in line, quin-in-to.
 
El tigre is the sixth in line ,sexto, sexto,
El tigre is the sixth in line, se-ex-to.
 
El elefante is the seventh in line ,séptimo, séptimo,
El elefante is the seventh in line, sé-é-ép-timo.
 
El león is the eighth in line ,octavo, octavo,
El león is the eighth in line, o-to-o-vo.
 
El hipopotamo is the ninth in line ,novena, novena,
El hipopotamo is the ninth in line, no-ve-e-no.
 
La cebra is the tenth in line ,décimo, décimo,
La cebra is the tenth in line, dé-é-é-cimo.
 
El leopardo is the eleventh in line ,once, once,
El leopardo is the eleventh in line, on-ce.
 
El burro is the twelfth in line ,doce, doce,
El burro is the twelfth in line, do-ce.

This song introduces twelve animals in Spanish  and the ordinal words for first-tenth.
After "tenth", the number word is used to denote an ordinal number.