Onions contain a compound which is toxic to the red blood cells of cats. The red blood cells are destroyed and this results in anemia. The specific type of anemia is called 'Heinz body anemia' because the red cells develop an abnormality called a 'Heinz body' which can be seen under the microscope.
Dug, the dog, is easily distracted by ... squirrels (well, he's easily distracted by everything, but especially squirrels). He can be talking (yeah, it's Pixar/Disney so the dog talks) & right in the middle of the sentence, he shouts, Squirrel!. Then he carries on with whatever he's talking about.
These twitches, however, are not occurrences of seizures. Seizures differ from normal twitches in a way that seizures happen suddenly and the dogâs body becomes stiff, locked-up and would start trembling heavily. The dog may also lose his consciousness and pant excessively. Whereas, in a common twitch, the dog just jerk suddenly and goes back to a quiet sleep. In fact, in the duration of a twitch, when you call out your dogâs name, it would wake as if nothing happened at all. Studies show that puppies and old dogs tend to dream more than middle aged and adult dogs.