This is really an area that your veterinarian should answer. Yes, pen is given to lambs, but more specifically, you need to know what you are administering it for. Antibiotics will help for bactterial infections, but not viral.
Only if it has been prescribed by your veterinarian
Healthy puppies need no penicillin. If they're sick, the veterinarian will decide which antibiotic to use.
Yes, most injectable penicillin formulations are designed to be given intramuscular.
no
You can give any size dog penicillin. It would need 3 mL or 3 cc's.
The length of time you can give penicillin will vary according to the brand and the infection. You should consult with a equine veterinarian regarding exact instructions.
Yes
a lamb
The vet
i don't recommend it.
15 times
You give the exact amount prescribed by your veterinarian. If your veterinarian has not prescribed penicillin for your puppy, you should not give any to your puppy. Penicillin is a drug with known side effects, including severe gastrointestinal bacterial infections from killing off the beneficial bacteria in the gut.