Mine is also reversed DS is nearly 4 and DD is 2 so there's a 23 month age gap between them. Somedays they are best friends other days there each others enemies lol but no matter what when we are out DS is super protective over DD. for example a lay comment how cute DD was and DS said no she's my Indy not yours lol
I guess it all depends.
Tank(mastiff x)+Echo(oz cattle)