Random "thud" sound when eating berry bushes as Iguanodon

I tried it on multiple playables but I only noticed it on Iguanodon, regardless of growth stage, it happens on hatchling as well. Single player and Community servers.
Whenever you start eating ( from my observation its only on berry bushes.) there is a slight thud sound to be heard at the beginning. It can resemble the sound when you spawn in or perhaps footsteps.

Default Iguanodon video - Singleplayer
Hatchling Video - Community Server

Whenever Iguanodon starts eating from a berry bush, an audio thud sound happens only in the beginning of the animation. It happens every time not only occasionally! This occurs across different growth stages and does not appear to happen with other playables I've tested, such as Lambeosaurus.

Eating from a berry bush should only produce the intended eating sounds only, without any unrelated thudding or footstep sounds like on other herbivores.