In my opinion, animals can beg...very well.... Here's prove
Eg.
Tyson begs for his daily walk and I'm a servant to his whinnings. Here's where his expertise comes in. He will beg in the evening and when I'm visible. When my mom is around, he will whine and whimper to her because Tyson knows mom's more caring and will call for my service...I can heighten his pleas by saying "walkie". His ears and mouth will twitch and he will pay close attention to my movements on the door and 'walking the dog' face expression(tired and bored) on me..
My Dad rears vegetarian pirahnas known as Paku. It looks just like a pirahna only black in colour and has no visible teeths. During dinner, as we eat,the fish will line up in one row looking at us and as close to the table as possible. Dad only feeds them once a day and you can understand this begging style.
Chickens can also beg, but only to a very close master like....Marcus, my bro.He says when they're hungary, they will pick up tiny stones and pretend to eat it, then just throw it on the floor.
Conclusion... animals beg....better than us. Imagine what they do when we are not around
