Senses 1 Volume 1

Yō informed the nervous looking Jin and Asuka.

"Don't worry. There's nobody nearby. I can tell by scent."

"Oh, you have a dog friend too?"

"Yeah. Around 20 of them."

Kasukabe Yō's Gift allowed her to grow stronger whenever she became friends with a beast. This was the reason behind her outstanding physical abilities. Her five senses like hearing and sense of smell were most likely even more acute than Izayoi's.