Does anyone own this dog or know someone who does?

$123 – Wallabi Point

Does anyone know who this dog belongs to? It is an undesexed male and is very skittish. It has been coming to my house for over a week now. It sits at the gate whining and marks its territory on our outdoor furniture. The other day it got into the backyard with my dog.
Would take it to the vet but it growls or barks and runs away if it sees me.