Assertion: prairie dog's predator | /r/HasProperty | spotted
Facets:
Source sentences:
text: Families defend their territories against other family units but cooperate with all members of the colony by giving alarm calls when predators are spotted.
text: Prairie dogs are very vocal and if a predator is spotted, the guard dogs will emit a staccato double-noted call consisting of a chirp followed by a wheezing sound that is accompanied by tail flicking.
text: When a predator is spotted, prairie dogs use high-pitched barking calls to communicate with one another, warning others of the nearby danger.
text: If a predator is spotted, the guard lets out a distinctive bark.