Charles Ellicott Commentary Jeremiah 14:6

"And the wild asses stand on the bare heights, they pant for air like jackals; their eyes fail, because there is no herbage." — Jeremiah 14:6 (ASV)

The wild asses. — From the field, the prophet’s eye turns to the bare hilltops of the “high places” and sees a scene of similar distress. The “wild asses” seem to have become beasts of prey, and they stand gaping from thirst, just as the jackals (not “dragons”—compare to Jeremiah 9:11) stand panting for their prey. Some scholars interpret the word as meaning, like a related word in Ezekiel 29:3 and Ezekiel 32:2, “crocodiles,” with their wide, gaping jaws.

There was no grass. — The word is not the same as that in Jeremiah 14:5, and implies a larger and coarser vegetation than that on which the female deer fed.