The cat-name discussion did pussy-foot its way to another cat thread,
where we talked about cooking fat.
In my native Great-Lakes region of the USA,
we call it "shortening", as in "short'nin bread" (that's a TUNE),
and there is more than one brand of it.
Never saw a brand "Trex" in the US,
but we have coffee-can-sized tins of "Crisco," thanks to Proctor and Gamble.

Imagine a North American pet cat named Crisco?

The Cris-co Cat was a friend of mine, doo doo doo doo ("Cisco Kid" by War)