The baby cows and goats are here!
Just outside of Leiden, there are two excellent kaasboerderijs well worth a visit. Both are open on Saturdays, perfect for a nice bicycle trip if the weather is amenable! The ride is under 20k and goes through lovely polder landscapes and quaint neighborhoods.
Here's a map:
View Tour de cheese in a larger map
And for the goats: http://www.hetgeertje.nl/