In a rudimentary manner much the same as lower animals do today.
Insects communicate with each other by sensory.
I do not know how Jaguars communicate with each other. They might growl or purr.
They communicate with each other through Canalicili Extensions.
the dinosaurs did each other because of greed and maybe even jealousy but research has recently said that they ate each other because the plants died due to global cooling. They also ate other dinosaurs eggs.
Penguins communicate by touhing each other, or feeling each other
Yes, dinosaurs did communicate with each other. We know that lambeosaurines, such as Parasaurolophus, could use hollow space in their crests as resonating chambers to create sounds, which would have been used for communication. Although dinosaurs probably didn't roar like they do in movies (there is no evidence for the structures that would permit roaring), they may have hissed. Also, posturing could have been used to communicate, either threatening another dinosaur or to be submissive. Because they are extinct, anything else would be speculation.
they hit each other
they bite each other for there lives.
They communicate with each other by sharing their ideas and maybe talk about their experiments together or writing to each other
Salamanders communicate with each other by visual ways. They also secrete a chemical that other salamanders can smell as a way to communicate.
Dinosaurs likely communicated through a combination of vocalizations, body language, and visual displays. Some dinosaurs may have used sounds and gestures to convey information such as warnings, mating calls, or territorial boundaries. Fossils and studies on modern-day animals can provide some insight into how dinosaurs may have communicated.
by talking to each other