Top ratings given at the German National Sieger Show:
VA - Vorzüglich-Auslese (Excellent Select show rating given only at Sieger show, with VA1 being the Sieger, VA2, 2nd place, and so on)
V - Vorzüglich (excellent show or performance rating, with V1 following the last VA , V2 next, and so on.)
SG - Sehr Gut (very good show or performance rating, with SG1 following the last V, SG2 next, and so on.)

Kkl1 - Körklasse 1 (especially recommended for breeding by the SV)
Kkl2- Körklasse 2 (suitable for breeding by the SV)
Lbz. - Lebenszeit (Breed surveyed for life)

SchH 1-3: Schutzhund or Protection Dog degrees, which are, in order of increasing accomplishment, SchH1, SchH2, Schh3, and the FH ( Farten Hund or Tracking Dog) degree. AD ( Ausdauerprufung or Endurance Test)

IPOI-3 - Internationale Prüfungs-Ordnung level 1-3, similar to SchH at International Level

'a': SV certification for hips; where the passing grade is either a-normal, a-fast normal, or a-noch zugelassen, for normal, near normal, and still permissible for breeding.

OFA:  Orthopedic Foundation for Animals certification for hips:  "OFA (age in mths when certified) (grade)" where the  passing grade is either E, G, or F  for excellent, good, and fair.  If no grade is present, the dog passed but the grade is unavailable.

OFEL:  OFA for elbows

OVC; Ontario Veterinary Colloege, Canadian equivalent of OFA

Am/Can CH: AKC and CKC Champion

CGC: Canine Good Citizen 

CD, CDX, TD, UDT: Companion Dog, Companion Dog Excellent, Tracking Dog, Utility Dog Tracker(AKC/CKC Obedience titles)

SAR: Search and Rescue