Lately, I have seen a lot of projects about the cat block. Even though it is just a joke, it has been the most favorited thing on scratch.

I think they will not be available always but maybe on next April fools day they are back

2GS6 wrote:

I think they will not be available always but maybe on next April fools day they are back

Well, it was an april fools joke, so it could come back.

1.13 Permanent option for cat blocks
The cat blocks were created by the Scratch Team as a part of April Fools' Day, where some Scratch blocks like the one below had cat ears and a face on them. Many Scratchers adored the cat blocks and have suggested that the Scratch Team permanently keep them in the editor, or otherwise make a permanent toggle so users can turn them on or off.

However, the cat blocks were intended to be temporary, and the Scratch Team has stated that they do not plan to bring them back as a permanent option. However, it is possible that they may temporarily come back during future April Fools' Day events.

TL;DR: No, except maybe for April Fool's.

Deejayvee wrote:

Lately, I have seen a lot of projects about the cat block. Even though it is just a joke, it has been the most favorited thing on scratch.

Scratch wiki:
A cat block is a type of block added temporarily on March 31 every year since 2020, for April Fools' Day, and removed on April 2 of the year.
Culture


Although cat blocks were only added for April Fools' Day, many users have referenced them in Scratch culture. Some users have asked the Scratch Team to re-add cat blocks permanently. However, the Scratch Team officially stated on March 31st that they would not be permanent:

“ Hi folks! I'm super excited you all are so excited about the cat blocks (we love them too!). This is just for April Fool's Day, so they will not be permanent. Just a fun thing for a few days ^.^ Enjoy them and Scratch On!

Scratch Wiki page about Cat Blocks

They usually are there on April Fools Day so they'll come back next year (in April Fools Day)

Ilikeemojis wrote:

They usually are there on April Fools Day so they'll come back next year (in April Fools Day)

(Maybe, they might not)