Beagles are hounds which naturally hunts for food (which I think they are used to aid in hunting) so being curious with their mouth is no surprise for me at all.
I am really glad that you have that with you and your Beagles are not picky with food.
For me charcoal pills are for the humans, until today, I got to know from you that they help dogs too.
(My mom use, paracetamol when something happens to my family dog if anything bad happens to her especially food poisoning. She's still alive till today, thank God)
upvoted and resteemed for good information.