My dog looks very similar to yours! We got her from the shelter in August of 2019 on free shelter day beautiful little baby. We really believe she was being trained, she can sniff out drugs, she jumps in and out of cars, through windows... and how the cops train their dogs with the people that have those massive paddings on the arm, she will try to do that with you and she's very protective on a leash and very alert. She loves other dogs though when when she's on a leash it's like she goes into work mode. She's very protective, jealous, smart, and very gentle dog until she gets hyper. We believe she's a Belgian Malinois pit mix because of all the characteristics and behavior they share. I've never seen anything like her before until I started searching up different mix breeds and one site showed Belgian Malinois pit mix and it matched right up with her. I'm hoping to get a dna test to find out exactly what she is.