The puppies have started their early neurological stimulation exercises for the "Bio Sensor" a/k/a "Super Dog Program". This program was developed by research showing puppies exposed to a variety stimuli at a young age are better equipped for life in the "real world". This process begins with early neurological stimulation and socialization, and as they grow exposure to a variety of enrichment experiences.
On Day 3 (through 16) the puppies go through the following series of five (5) exercises:
1. Tactical stimulation (between toes)
2. Head held erect
3. Head pointed down
4. Supine position
5. Thermal stimulation
Here is an example of exercise 2:
Feel free to read the full article (pdf) by Dr. Carmen L. Battaglia here:
http://breedingbetterdogs.com/pdfFiles/articles/early_neurological_stimulation_en.pdf