Cats are unique in their high susceptibility to tumors at vaccine injection sites. (2ndchance.info)
It can occur spontaneously in cats who have not received vaccines; however, an increased frequency of this type of tumor has been observed at vaccine injection sites. (riverbarkvet.com)
After vaccine injection, the ferret should be monitored for 20 to 30 minutes by your veterinarian. (midwestexotichospital.com)