Cocker spaniel day 30 from first mating, love how the scan makes a smiley face image 

A scan of my own girl day 25 after first mating showing a very large clear foetus and another less clear foetus in the shadows beneath. 

Scan of a clients miniature dachshund day 38 post first mating, measuring foetus using gestational sac it measures as approx 5wks 3days old from ovulation

Scan of a clients cockapoo day 33 post mating and measuring foetus using Bi-Parietal Diameter makes the pup 5wks and 1day old from ovulation. 

Scan of my own girl at day 25 after first mating, 1 superbly clear foetus and a 2nd not so clear.