Yes. Many people find it quite offensive that dogs are a food source in some cultures. Their cultural background is the basis of their feeling offended.
Objectively it is no more or less moral than harvesting cows, pigs, chickens, etc. for food. But we have assigned a special status to dogs and cats. So we are offended due to a tradition of value that we we accept and adopt, not because dogs are more special than cows. I admit that I am offended by cats and dogs being used as food, and that is due to my experiences with cats and dogs as pets. There are people who form emotional attachment to their dairy cows, and feel sadness when they die.
Let's say you grew up in a part of Australia where there are many wild dogs that can attack and kill people. Would you think twice about killing those dogs if they attacked your children? Would you feel bad about leaving the carcasses out to be scavenged?
So do you follow what I'm saying here about the cultural values that we inherit and haven't personally thought through for ourselves? This relates to the prejudice and bias that it taught and learned by many cultures in the West. There is a lot of prejudice against gays and trans people among conservatives in the USA, and it is a cultural dispute. That arguments conservatives make against trans and gay people are cultural threats and bogus threats against children, as if the left is trying to teach the children of America to be gay.