FB language switch caused by puppy

[nebo113]

OK.  New canine who is computer illiterate but whose little paws have twice changed English to Spanish or Portuguese or Esperanto.  I figured out the first time how to switch back to English but it took TIME and SWEAT and FRUSTRATION.

What is the critter triggering when he hops on the keyboard?  And what's a simple way to fix it?

And yes, he's a 20 pound, year old pound puppy and we're both in training.