Help with behaviour

the dog food we use (blackwood) is also available in israel
Ora-Vet Ltd.
Rami Eldad
P.O. Box 393
Kibutz Givat Hashlosha 48800
office #1 972 3 937 4913
office #2 972 3 913 0956
fax 972 3 937 4965
ora-vet@zahav.net.il

I prefer to use RMB's to keep doggy teeth in good shape, and if I brush at all, I use a finger brush and no toothpaste.  My dogs get few chemicals of any kind, and live to ripe old ages mostly.
It could be that the low quality food, combined with soft food, has created placque on your dog's teeth - that's probably where the odor is coming from.  The danger is that if you don't address it with a dental cleaning by the vet, your dog could develop the same type of problem that humans get - gingivitis that can turn to periodontal disease.  Not only can it be painful and inflamed, it can result in tooth loss and possibly heart problems.  You may be able to find better quality foods online (you can go to www.mordanna.com and click on The Dog Food Project for some advice about foods)
As to his breed, my guess is Lab/Dane.  I had a Lab/Dane/Dobe mix back in the 70's and he looks very similar. 
I agree with your vet about the sucking - and as long as he isn't hurting anything, I wouldn't worry about it. 

Wow, thank you all for these wonderful advices!
 
I'd get into it right away (Dogs toothpaste, and better dogs food - although my vet always recommanded Yukanuba).
 
I heard of Eagle Pack, I'll most certainly give it a try.
 
Again, thank you all for your help I'll keep hanging around the forum and see what you guys come up with.
 
Have a wonderful weekend

Cyclefiend,
Where does it say you SHOULDN'T use dog toothpaste.
 
Quote from your link:
 

Dog Toothpaste 

Always use a specially formulated dog toothpaste. Because dogs 

can't rinse and spit after a brushing, the dog toothpaste must be safe for 

pets to swallow! Some human toothpastes contain detergents 

which can irritate pets' stomachs, and, in addition, large quantities 

of ingested fluoride can harm pets. 

sorry mic was a long day yesterday. what i was meaning to say was that you should use a dog specific toothpaste and should not use a human toothpaste.

I got it.  Hope to day is shorter!