1)
What is the comparison to locusts?
1.
Rashi: It jumps like locusts, and agitates those around it.
2.
Ibn Ezra: When it runs, it makes a great noise, like locusts. Malbim - also Yo'el 2:4 compares locusts to horses.
2)
What is "Nachru", and what is the fear?
1.
Rashi: It breathes through its nostrils, and makes a scary sound. Ibn Ezra - this is like "Nacharas Susav."
2.
Malbim: It neighs, and its glory is seen. This puts fear on those who see it.
