Literally, "Feliz cumpleaños, perro." I suspect that you intend this for a friend though. In that event, you might want to substitute "perro" with "carnal", "tío" or "vato" so as not to offend.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^Or you can simply say "Feliz cumpleaños, tío"
felis cupliano's is happy birthday
feliz cumpleaños
feliz cumpleaños
You can say "Feliz cumpleaños, Papá".
Well in Spanish they say Felix complianos
"Feliz cumpleaños Jose"
Feliz cumpleaños, Roberto.
Feliz cumpleaños, Bob.
Lillie feliz cumpleaños
feliz cumpleaños Diego
This would be "Feliz cumpleanos, Tim"
feliz trigésimo quinto cumpleaños.