A dog in computer terminology is a sign read like the English preposition "at" and similar to the letter "a" (Russian or Latin) with a spiral tail. "Dog" is a mandatory sign in writing an e-mail address and is placed between the addressee's name and the server on which the mailbox is located. In the names of some other services, they also put "dog".
To put "doggy" in a text editor or blog post, switch your keyboard to the English layout. Use the combination “Alt-Shift” or “Ctrl-Shift” for this; you can change the language in the language bar (in the lower right corner).
Press the “Shift-2” keys at the same time. If instead of "doggy" there is another sign (quotation marks), try pressing "e" instead of two. The "dog" will appear in the text.
You can copy the @ sign from any text, for example, from this article, by pressing the "Ctlr-C" keys, and then paste in the desired place in the text by pressing "Ctrl-V".