You're speaking with Dr. Michael Salkin. Welcome to JustAnswer. I'm currently typing up my reply.
I'm sorry to hear of this with Jasper, Julia. Vocalizing when being lifted can indicate pain in Jasper's back or abdomen. Although the rib cage encloses the chest cavity, it wouldn't be easy to induce pain originating in the chest cavity by lifting him. His fever is quite high and enough to cause the discomfort you're seeing. Fevers arise from inflammation and not necessarily the inflammation associated with infection.
The proper manner in which to proceed is to stop treating symptomatically and investigate Jasper further with diagnostics in the form of blood and urine tests and X-rays of his chest and ultrasound of his abdomen. You should know within 24 hours why he's so febrile and uncomfortable - nonspecific and nondiagnostic symptoms that need to be pursued rather than have antibiotics and pain relievers thrown at them.
Please respond with further questions or concerns if you wish.
Pancreatitis in an 11 month old would be very unusual. He needs to be seen at your earliest convenience. I'm not as concerned about his caloric intake as I am about his hydration. please see if you can get an infant fluid/electrolyte replacer such as Pedialyte down him until tomorrow morning. His daily requirement is 2 ounces of fluids per kilogram of body weight which is nigh impossible to get down a dog orally but every little bit counts. Consider hospitalizing Jasper on IV fluids until diagnostics are completed and you know what you're addressing. Please continue our conversation if you wish.
Eyedroppers and smal poultry baster basters placed between his cheek teeth and cheek should be helpful. You're quite welcome. I can't set a follow-up in this venue so please return to our conversation - even after rating - with an update at your convenience. You can bookmark this page for ease of return.
I understand. Be careful. He's lucky to have you.
Thank you for your kind accept. I appreciate it.
Ugh. Thank you for letting me know. My best to Jasper!
More ugh. Granulomatous meningoencephalomyelitis (GME)? Steroid-responsive meningitis-arteritis?