Amines; Anticonvulsants/therapeutic use; Cat Diseases/drug therapy; Cyclohexanecarboxylic Acids; Dog Diseases/drug therapy; Epilepsy/veterinary; Seizures/veterinary; gamma-Aminobutyric Acid; Acetates/administration & dosage; Acetates/pharmacology; Acetates/therapeutic use; Animals; Anticonvulsants/administration & dosage; Anticonvulsants/pharmacology; Bromides/administration & dosage; Bromides/pharmacology; Bromides/therapeutic use; Cat Diseases/diagnosis; Cats; Diazepam/administration & dosage; Diazepam/pharmacology; Diazepam/therapeutic use; Dog Diseases/diagnosis; Dogs; Drug Resistance/physiology; Emergency Treatment/methods; Emergency Treatment/veterinary; Epilepsy/diagnosis; Epilepsy/drug therapy; Felbamate; Gabapentin; Phenobarbital/administration & dosage; Phenobarbital/pharmacology; Phenobarbital/therapeutic use; Phenylcarbamates; Potassium Compounds/administration & dosage; Potassium Compounds/pharmacology; Potassium Compounds/therapeutic use; Propylene Glycols/administration & dosage; Propylene Glycols/pharmacology; Propylene Glycols/therapeutic use; Seizures/diagnosis; Seizures/drug therapy