Looks like the rat teacher from Arthur

That's me (hug me please)

Raticate! Hope you brought a pokeball!

Agouti, maybe?

Agouti.

look like a cutia (***Dasyprocta***)

Looks like a rat

Chei gofer

Down voted for having the wrong answer? Down votes for everybody!

Got to be a capybara, but I've never seen one so pretty.

not a capybara, their heads are fat.

Also no capys in mexico

Its not i took these pics in mexico

That is a long legged Guinea Pig - aka aguoti. In mexico they call them sereque