If the patient has a microchip, the Patient Info top line looks as follows:

As you can see it needs a space after the breed.  In the patientpet archetype, the description node expression needs to be changed from

 concat(openvpms:lookup(.,'sex'), ' ', /details/colour, ' ', openvpms:lookup(.,'breed'), '(',party:identities(),')')

to

 concat(openvpms:lookup(.,'sex'), ' ', /details/colour, ' ', openvpms:lookup(.,'breed'),' ', '(',party:identities(),')') 

Regards, Tim G