Craig Silbery is turning to man’s best friend for his next venture. The entrepreneur made his money selling probiotic manufacturer Life-Space group to Chinese health supplements giant By-Health for $700 million in 2018, pocketing about $140 million in the process. Pet-tech startup Ilume is putting your dog on a diet. Now, he is on the move with Ilume, a pet-tech start-up tracking system delivering food and health insights to gain a bite of America’s $27.6 billion online pet food and pet supply sales industry. Street Talk understands Ilume is trying to rustle up between $10 million to $20 million from…