1)
What is the significance of "va'Tavo Chayah Vemo Arev"?
1.
Rashi: Hashem has many other messengers to exact punishment. He can send evil beasts, storm winds and cold.
2.
Ibn Ezra: Chayos [hide,] as if in ambush, at a time of rain.
3.
Malbim: All living beings cease their work in the field. Chayos hide in ambush in forests and deserts, to ambush smaller animals.
2)
Why does it say "uvi'M'onoseha Sishkon"?
1.
Malbim: Some living beings hibernate in winter, or prepared their food [in the summer] for the winter, and dwell in their homes [and do not leave].
