Firstly Mr Alexander, you are wrong: Australia has the highest rate of mammalian extinction in the world.

Source: https://www.dailyadvertiser.com.au/story/8097969/letters-correcting-the-record-on-some-recent-contributor-claims/?src=rss

It is "the world's first experiment that cultured early-stage mammalian embryos under complete microgravity of ISS," the statement said.

Source: https://japantoday.com/category/tech/mouse-embryos-grown-in-space-for-first-time-japan-researchers1

The combined effects of the invasive mammalian predators and habitat loss proved to be too much to bear leading to the extinction of several native species including the Burrowing Owl, the Antiguan Parrot, and the Antigua Curly-Tail Lizard.

Source: https://antiguaobserver.com/reflecting-on-the-antiguan-racers-remarkable-resilience/

The humpback whale really is your complete package when it comes to the ultimate mammalian powerhouse.

Source: https://www.echo.net.au/2023/07/humpback-whale-look-out-2024-eurovision-and-paris-olympics/

The repetitive and cyclical nature of the season, along with our mammalian response to conditioning, sets us up for withdrawal once the stimulus is removed.

Source: https://www.sandiegouniontribune.com/opinion/commentary/story/2023-02-10/opinion-post-football-season-melancholia-is-real-and-all-of-us-must-deal-with-it-in-our-own-ways

This means that through a fateful endosymbiosis more than 1.45 billion years ago, the once symbiotic relationship between two independent organisms, resulted in a merger for the greater efficiency of the now mammalian cell.

Source: https://mg.co.za/thoughtleader/opinion/2023-04-18-money-and-mitochondria-capitalism-messes-with-our-mental-health/

To better understand human impact on the environment, scientists in Milo's lab are currently analyzing how mammalian biomass has changed over the past century.

Source: https://phys.org/news/2023-02-weight-responsibility-biomass-livestock-dwarfs.html