Some rats are more ticklish than others - and you can tell by how much they squeak with 'laughter'

[السياسي]

Researchers from the University of Bristol say it could be possible to use call patterns in rats to measure their emotion response as a way of improving their welfare.

https://www.dailymail.co.uk/sciencetech/article-8756397/Not-rats-ticklish-listen-squeak-know-theyre-laughing.html?ns_mchannel=rss&ito=1490&ns_campaign=1490 ]قرااء المزيد ..... [/url]