The beat?

This adorable sea lion has a really good sense of rhythm.

What amuses me is that they somehow think only animals with "vocal mimicry" can have a sense of rhythm.

Anyone who's ever tried their hand at riding to music knows horses have a keen sense of beat, some better than others. Dogs will often join in if their human packmates start singing. I think all "higher" animals appreciate music.

It's just that birds and humans are the best at making it.