A last example of animal communication for now - here are three different bear capture sequences that have quiet, family-related bear vocalizations in them. (I hope instagram's sound quality doesn't let me down here!) In the first sequence, a mother bear passes by, followed by her cub, who is making short, high pitched squeaks as he runs to keep up to her. (Volume way up, to hear.) The second sequence is taken a month and a half earlier (so the cub sounds are quieter and more high pitched). It shows a mother passing by, and then a cub showing up in the lower left corner after a period of a few seconds. During that empty period, there are a few even quieter, high pitched squeaks (the cub, I believe), followed by a lower, gutteral sound (the mother's response). I had to listen a few times to hear the cub, but the mom is pretty clear in comparison. The third sequence I'm not sure about, but it sounds like there may be a few short vocalizations, similar in pitch and duration to the cub in the first video, at the beginning of this one. (Often one animal shows up on video, and there are others nearby, but out of view, that you can still hear.) ... Even though these sounds are super faint, I was very excited to start to recognize, and realize I was privy to, such intimate parent-child bear talk.