Yoshi seems to be trying to eat garden stones???

:roll: I am slightly confused as to what yoshi is trying to do:roll:

We have been doing a biut of gardening and yoshi has been out running around the garden table where we have gravel stones and now he seems to be picking them up trying to bite on them then throws them down :roll::roll:

Is this a game or is he just a mad bunny and likes the taste of stones ??? :lol: I really have no idea

Anyone has any ideas what he might be doing please let me know. I keep stopping him from doing it as i am afraid of him actually eatting or choking on a stone