60: 以下、5ちゃんねるからVIPがお送りします 2024/01/05(金) 16:15:11.704 ID:EVdks1K90

ひいては猫に？(^^)

62: 以下、5ちゃんねるからVIPがお送りします 2024/01/05(金) 16:15:54.417 ID:EVdks1K90

そんな…(^^)

63: 以下、5ちゃんねるからVIPがお送りします 2024/01/05(金) 16:15:58.918 ID:c9L81OONa

確かに猫の耳はネズミの声を聴き取るために高い周波の音を聴ける
それがどうしたって話

64: 以下、5ちゃんねるからVIPがお送りします 2024/01/05(金) 16:16:22.282 ID:EVdks1K90

>>63
おれまだ負けてない？(^^)

65: 以下、5ちゃんねるからVIPがお送りします 2024/01/05(金) 16:16:39.136 ID:EPvJAjLn0

負けって何だよ

66: 以下、5ちゃんねるからVIPがお送りします 2024/01/05(金) 16:17:23.464 ID:EVdks1K90

ちょっと医者行ってくるわ…
サイレントニャーの真偽はお前らに任せた

69: 以下、5ちゃんねるからVIPがお送りします 2024/01/05(金) 16:20:06.846 ID:7xkTSDry0

犬でもやるらしいな

The ultrasonic vocalizations emitted by rats and mice have been categorized. There are three classifications: 22-kHz vocalizations, 40-kHz vocalizations, and 50-kHz vocalizations.[1] The 40-kHz calls are short in duration, lasting anywhere from 80-150 milliseconds, while the 50-kHz calls tend to be even shorter, lasting anywhere from 20-100 milliseconds.[1] In contrast, the 22-kHz calls are longer in duration, ranging from 300-3000 milliseconds. Adults emit the 22-kHz and 50-kHz vocalizations, while pups emit 40-kHz vocalizations.[1] Ultrasonic vocalizations are not precisely 22-, 40- and 50-kHz. 22-kHz calls can range from 18-32-kHz, 40-kHz calls range from 40-70-kHz, and 50-kHz calls range from 35-72-kHz.[8]

The 22-kHz vocalizations of adults and the 40-kHz vocalizations of pups are emitted in response to aversive situations or noxious stimuli.[8] For example, isolation, aggression between males, appearance of predators, surprising noises and inescapable foot shocks would elicit these vocalizations.[8] Conversely, the 50-kHz vocalizations emitted by adults are produced during appetitive situations such as social play between juveniles, whilst engaging in mating behaviour, or when the animal is touched gently.[8] Individual differences, as well as social factors such as housing arrangements, can affect the number of elicited vocalizations and the probability of their occurrence.[1] However, variability is wider in 22- and 50-kHz calls, and lower in 40-kHz calls.[1] Whereas 40-kHz calls have a high survival value for pups, 22- and 50-kHz calls are emitted in situations that can differ greatly between individuals.[1]