brad, chad, clad, egad, grad, glad
rook
One four letter animal that does not rhyme with any words is wolf.
A four-letter animal word that cannot be rhymed is "wolf." Unlike many other four-letter words, "wolf" has a unique ending sound that doesn't have a perfect rhyme in the English language. Other examples of four-letter animals, like "frog" or "bear," have words that rhyme with them, but "wolf" stands out as an exception.
FartDartPartMartHart
rhyme
detected
Calf, gaff,
undead
ail
Hive Dive Live
bled head shed
4 letter words rhyming with 'down':GownNounTown