Household pets and TLCB Elves don’t usually get on. From October 2021 however, we expect they might share a common nemesis; this is the brand new LEGO Technic 42131 App-Controlled CAT D11 Bulldozer. All 3,854 pieces of it.

Measuring 57cm in length and 37cm wide, 42131 brings the Caterpillar brand into LEGO’s burgeoning array of official partnerships – alongside equipment manufacturers such as Volvo, Claas, and Liebherr.

Four ‘Powered UP’ motors and a Control+ hub enable the set to be controlled via your mobile phone, with the huge yellow tracks, blade elevation and tilt, and ripper height all powered and remotely operable.

Those yellow tracks are new for 2021 too, making their debut on 42131, and featuring a tightening/loosening mechanism that we expect will make them highly sought after for builders’ own tracked creations.

A working piston engine complete with details such as brick built turbo-chargers, realistic (and – we must admit – rather excellent looking) decals, and a high level of visual exterior detailing including rails, ladders, exhausts, and lights, make for very impressive looking set, and one we expect will become mighty popular.

Aimed at ages 18+, the new LEGO Technic 42131 App-Controlled CAT D11 Bulldozer is expected to cost around £420, which – much to the relief of our Elves – is comfortably outside TLCB’s budget. If it’s within yours you can get your hands on all 3,854 pieces from October 2021, and your cat will never be able to relax again.