Plutarch, Aratus
Bernadotte Perrin, Ed.

8. Now it was no great distance from the garden to the wall, and to the tower, in which a huge dog was on the watch, a hunter. The dog himself did not notice their approach, either because he was naturally sluggish, or because during the day he had become tired out. But when the gardener's whelps challenged him from below, he began to growl in response, faintly and indistinctly at first, then bayed out more loudly as they passed by. [2] Presently the whole place resounded with barking, so that the watchman opposite called with a loud cry to the huntsman asking why his dog was baying so savagely and whether some mischief was not afoot. The huntsman answered him from the tower that there was nothing to fear, but that his dog had been excited by the lights of the sentries and the din of the bell. [3] This more than anything else gave heart to the soldiers of Aratus. They thought that the huntsman was privy to their design and was trying to conceal it, and that there were many others also in the city who would assist them. However, when the rest of the company essayed the wall, their peril was grievous and protracted, since the ladders shook unless they mounted one by one and slowly; moreover, time was pressing, since cocks were already crowing, and directly the people who brought produce from the country to the market-place would be coming up. [4] Therefore Aratus also mounted the wall in haste, after forty in all had mounted before him; and when he had been joined by a few more of those below, he went up against the tyrant's house and the praetorium, where the mercenary soldiers passed the night. And after falling upon these suddenly and capturing them all, but killing none, he straightway sent messages to his friends summoning them all from their homes, and they ran together from all quarters. [5] Day was now breaking, and the theatre was thronged with people who still were in suspense because of the uncertain rumour that prevailed and in utter ignorance of what was afoot, until the herald came forward and made proclamation that Aratus the son of Cleinias invited the citizens to secure their freedom.