A dog is never born again.
The new birth is why we have two natures.
The new birth brings the spiritual nature.
The controversy is whether the old (the flesh) is eradicated.
If not why then are we instructed to walk in the Spirit to avoid the works of the flesh?
Galatians 5
This I say then, Walk in the Spirit, and ye shall not fulfil the lust of the flesh.
17 For the flesh lusteth against the Spirit, and the Spirit against the flesh: and these are contrary the one to the other: so that ye cannot do the things that ye would.
The flesh remains and we are instructed to mortify the deeds of the old nature:
Colossians 3:5 Mortify therefore your members which are upon the earth; fornication, uncleanness, inordinate affection, evil concupiscence, and covetousness, which is idolatry:
6 For which things' sake the wrath of God cometh on the children of disobedience:
7 In the which ye also walked some time, when ye lived in them.
8 But now ye also put off all these; anger, wrath, malice, blasphemy, filthy communication out of your mouth.
9 Lie not one to another, seeing that ye have put off the old man with his deeds;
10 And have put on the new man, which is renewed in knowledge after the image of him that created him:
Seems we could all use a little more of this kind of scriptural advice seeing the awful and accusatory interchanges going on here at the BB lately.
HankD