On Monday night, when my Hookbill/Runner cross ducklings were hatching, my big German Shepherd kept looking at the incubator and cocking his head to one side....and then to the other...
Those incubators had been innocently humming away for a month, and suddenly they were peeping!
He didn't go nuts like I thought he might though. He just kept looking at the incubator, all perplexed. Then, he finally just plopped his head down on the bed and went to sleep, so now I know I can trust him to be in the same room as the incubators during hatch time.