Guess what humans are? MAMMALS!
Guess what dogs are? MAMMALS!
Now go feed your dog some chocolate.
And watch it die.
If you seriously think that all mammals have the same biochemistry, you failed biology at every fucking level from kindergarten to post- secondary, and in recess, lunch, and detention. And Pornhub. You're so bad at biology I wonder if you even know which end of your dick to use.
Incorrect, I haven't. Mice are mammals too, forgot to include those last second into that huge class of mammals.
Having had been around dogs a lot in my life, there's one particular chocolate that's lethal, baker's chocolate. The milk chocolate stuff, not much of a problem but best to avoid just in case.
My friend's chocolate lab (ironically enough) ate an entire Mars bar one day, something she snatched off of someone at the table at Jack Darling park in Mississauga.. she was fine, no problems.
The stuff that's dangerous is the baker's chocolate stated above, 70% cocoa.
Safe to say you knew these two basic ones and people. Feed some people peanuts, or anything containing peanuts - even trace amounts), or shell fish of any kind and they're going to have serious problems.
But wait, there's more
https://www.mayoclinic.org/diseases-conditions/food-allergy/symptoms-causes/syc-20355095