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This is an undated image released on Wednesday Oct. 8, 2014 by animal rights organisation PACMA  of a dog named Excalibur who is owned by Javier Limon and his wife, a nurse assistance who got infected with Ebola in Madrid. Ebola's victims may include a dog named Excalibur. Officials in Madrid got a court order to euthanize the pet of a Spanish nursing assistant with Ebola because of the chance the animal might spread the disease. At least one major study suggests that dogs can be infected with the deadly virus without having symptoms. But whether or how likely they are to spread it to people is less clear. (AP Photo/PACMA) NO ARCHIVE
This is an undated image released on Wednesday Oct. 8, 2014 by animal rights organisation PACMA  of a dog named Excalibur who is owned by Javier Limon and his wife, a nurse assistance who got infected with Ebola in Madrid. Ebola's victims may include a dog named Excalibur. Officials in Madrid got a court order to euthanize the pet of a Spanish nursing assistant with Ebola because of the chance the animal might spread the disease. At least one major study suggests that dogs can be infected with the deadly virus without having symptoms. But whether or how likely they are to spread it to people is less clear. (AP Photo/PACMA) NO ARCHIVE

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    Did Excalibur the dog have to die?

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Did Excalibur the dog have to die?

Animal Planet's Dan Riskin joins CNN Tonight to discuss Spain's decision to euthanize Excalibur, an Ebola patient's dog

Did Excalibur the dog have to die?

Animal Planet's Dan Riskin joins CNN Tonight to discuss Spain's decision to euthanize Excalibur, an Ebola patient's dog