The example for dynamicProperties includes the following JSON:

{'heightInMeters':'1.5'}
{'tragusLengthInMeters':'0.014', 'weightInGrams':'120'}
{'natureOfID':'expert identification', 'identificationEvidence':'cytochrome B sequence'}
{'relativeHumidity':'28', 'airTemperatureInCelcius':'22', 'sampleSizeInKilograms':'10'}{'aspectHeading':'277', 'slopeInDegrees':'6'}
{'iucnStatus':'vulnerable', 'taxonDistribution':'Neuquén, Argentina'}

JSON requires strings to be in double quotes, while the example shows single quotes. That's probably because every example is in double quotes - it would be better to have those as inline code, but that's another issue - but it's wrong none the less.

Why are all the numbers in quotes? Numbers don't require those. So, I would suggest to update the example to:

Examples: "{"heightInMeters":1.5}", "{"tragusLengthInMeters":0.014, "weightInGrams":120}", "{"natureOfID":"expert identification", "identificationEvidence":"cytochrome B sequence"}", "{"relativeHumidity":28, "airTemperatureInCelcius":22, "sampleSizeInKilograms":10}", "{"aspectHeading":277, "slopeInDegrees":6}", "{"iucnStatus":"vulnerable", "taxonDistribution":"Neuquén, Argentina"}". For discussion see http://terms.tdwg.org/wiki/dwc:dynamicProperties