Bo – Throw it to the Dogs
Rabbi Yishayah was the student of Rabbi Chanina ben Dossa. He fasted for eighty five days because he did not understand why dogs upon whom it is said “And the dog has a nasty soul” (Yishayahu) why they can say song in front of G-d as it is said “Come bow down prostrate, let us bless in front of G-d who created us.” (Tehilim) An angel appeared to him. The angel told him Yishayah! until when will you fast over this? It is a ruling from G-d who told his secret to Chabakuk the Prophet and did not expalin it to anyone else. Because you are the student of a great Rabbi they had to send him. Since it says (parashat Bo) “A dog did not wag his tounge” the dog was rewarded. Using their Feces we make the parchments for Sifrie Torah, Tefillin and Mezuzot. (The skins were treated with dog manure)
Additionally, Since it says “And a dog did not wag his tounge” because of that dogs merit eating animals which died as it says “Throw it to the dog”
This Pasuk “A dog did not wag his toungue” which is found in our Perasha. Simply by following G-d’s one time command of not barking while the final plague of the Death of the Fist Born was taking place they merited much benefit. They get to eat lots of meat and their feces are used to treat the holiest objects to Judaism.