A resource-env-ref without injection targets must be bindable

Caused by: org.jboss.as.server.deployment.DeploymentUnitProcessingException: Could not determine type for resource-env-ref java:comp/env/dog
    at org.jboss.as.ee.component.deployers.ResourceReferenceProcessor.getResourceEnvRefEntries(ResourceReferenceProcessor.java:86)
    at org.jboss.as.ee.component.deployers.ResourceReferenceProcessor.processDescriptorEntries(ResourceReferenceProcessor.java:55)
    at org.jboss.as.ee.component.deployers.AbstractDeploymentDescriptorBindingsProcessor.deploy(AbstractDeploymentDescriptorBindingsProcessor.java:103)
    at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:115) [jboss-as-server-7.1.0.Alpha2-SNAPSHOT.jar:7.1.0.Alpha2-SNAPSHOT]
    ... 5 more